opendatalab/WebMainBench huggingface dataset:
# 百闻不如一见｜7年！7个维度看雄安

7年前，中国决定设立河北雄安新区

7年间，一个个地标建筑拔地而起

“四纵三横”高速路网初步形成

“云上雄安”基本成型

碧水蓝天重现往日美景

……

7年！来看未来之城雄安创造的这些新坐标

**热度**

近日，考古学家在雄安确认发现8座古城遗址

千年来，人们在这片土地

繁衍生息、赓续文明

如今，无数“新雄安人”让这座城地旺人兴

雄安已引进“双一流”高校人才3000余名

创新创业人才3万余人

在已建成的雄安重点居住片区

约12万群众喜迁新居

雄安之热

折射人文之城的活跃力

**高度**

7年间，超过4000栋楼宇在雄安拔地而起

日前封顶的中国中化大厦

设计结构高度150米

将成为雄安新区最高建筑之一

与此同时，产业也向新向高发展

空天飞行技术全国重点实验室在此挂牌投用

中国星网和三大电信运营商组成的

中国空天信息和卫星互联网创新联盟

加快组建

打造全新的“空天信息+”产业生态

雄安之高

见证建设之城的突破力

**广度**

铺开雄安交通运输未来20年的蓝图

“四纵两横”高速铁路网

“四纵三横”高速公路网

网格化普通干线公路网

“一干多支”水上交通体系

公铁水融合的对外综合交通网络不断延展

未来，雄安将建设全国性综合交通枢纽城市

与京津石共同打造国际性综合交通枢纽集群

同京津共建全球性国际邮政快递枢纽集群

雄安之广

开拓枢纽之城的延展力

**精度**

在数字信息构成的“云”上

一座数字城市在同生共长

被称为“雄安之眼”的城市计算中心

是“云上雄安”的重要载体

在城市计算中心的大屏上

几乎每一座实体大楼都有其对应的数字大楼

而数字道路上的车流量、拥堵指数、

路段平均速度等实时数据也能一览无余

从城市治理到生态监测

从社区生活到交通出行

都可实现数字化管理

雄安的精度

激发数字之城的计算力

**深度**

在地下雄安

水、电、热、气等管线都“住进”综合管廊

国贸中心片区100万平方米地下空间

将构成一座“地下城”

高铁、地铁在地下可平层换乘

“5G+北斗”定位导航技术

为容东超过20万平方米地下停车场提供导航

在雄安，看不到架设高压线的铁塔

秘密藏在一座座花园广场之下

剧村变电站

是中国第一个覆土空间综合利用的变电站

所有的线路都“藏”于地下

能够实现智能机器人自动巡检

雄安之深

奠基科技之城的承载力

**显色度**

春天的雄安

呈现蓝绿交织、水城共融生态美景

白洋淀水质进入全国良好湖泊行列

“华北之肾”重放异彩

白洋淀野生鸟类增至279种

“鸟类天堂”盛景再现

累计造林47.8万亩

森林覆盖率由11%提高到34.9%

未来，雄安新区蓝绿空间占比将会达到70%

雄安之底色

呈现生态之城的修复力

**融合度**

“15分钟生活圈”带来家门口的便捷生活

养老驿站托起老年居民的安逸晚年

社区食堂酝酿“舌尖上的幸福”

……

雄安，有从北京疏解过来的新居民

有从周边村镇安置过来的老城人

有毕业来此扎根的青年人

无数人的生活交织于此

无数生活的新构想交汇于此

雄安之融合

体现宜居之城的实践力

**高起点规划、高标准建设、高质量发展**

**一幅幅生动隽永的雄安实践图景**

**正勾勒出新时代宜业宜居的“未来之城”**
# Our facilities and services

Our front desk is open from Monday through Friday between 7 am and 7 pm. On Saturday from 8 am until 1 pm. Afterwards we’ll be here only in case of late check-outs and check-ins. Sundays we are open for checkins and checkouts.

After hours check-ins are possible if arranged in advance.

During the night the premises are protected by a night security guard. We can be reached 24-hours-a-day by telephone.  
Our friendly staff will personally ensure that you enjoy your stay with us. Let us take care of you in the traditional way for which the island of Aruba is world famous!

Please refer to the front desk with all your questions and requests.  
They’ll make reservations, refer to that particular restaurant or recommend a spectacular island tour.

## Our standard services include:

  * Daily cleaning (except Sundays and holidays)
  * Free WiFi Internet
  * 24/7 camera surveillance
  * Free local telephone calls
  * Cable TV
  * Ice machine
  * The use of our swimming pool, sun terrace, sun loungers and BBQ area
  * Monitored parking lot
  * Reception with service desk for your reservation, car rental, restaurants, excursions etc
  * Welcoming, multilingual staff
  * Non smoking apartments
  * Mini library



## Additional services (for a fee)

  * Beach Package: beach chairs, coolers and beach towels
  * Use of the laundry (self service)
  * Early check-in
  * Late check-out
  * Extra bed
  * Use of iron, blender, rice cooker, highchair and much more. Ask for the possibilities!
# Solving the African Integral (from YG file cover)

A long time ago, I gave my friend (Let's call him C) an integral to solve. He came back to me a few days later and the conversation went something like this:

> **C:** Debu, I couldn't solve that African integral you gave me.  
> **Me:** Ok, but why are you calling it African?  
> **C:** Because Africa is a really big continent, y'know?  
> **Me:** Ok, but isn't Asia bigger?  
> **C:** Debu, please stop making me feel dumb  
> 

The integral in question appears prominently on the YG file cover as well, and is also featured in Advanced Problems in Mathematics for JEE(A) by Vikas Gupta (Question 24 chapter 7, for those following along)

> Evaluate $$\int e^{x\sin x + \cos x} \left( \frac{x^4\cos^3x - x\sin x + \cos x}{x^2 \cos^2x}\right) dx$$

This looks fearsome, but we can solve it easily by extending the trick $\int e^x (f(x) + f'(x)) dx = e^xf(x) + c$ just a little bit. Consider the function $$e^{g(x)}f(x)$$ Differentiating said function, we see that $$\frac{d}{dx} (e^{g(x)}f(x)) = e^{g(x)}(f'(x) + g'(x)f(x))$$ Rearranging the terms and integrating on both sides: $$e^{g(x)}f(x) = \int e^{g(x)}(f'(x) + g'(x)f(x)) dx$$ For the given problem, $g(x) = x\sin x + \cos x \implies g'(x) = x\cos x$. Therefore, the answer will be something of the form $$I = e^{x\sin x + \cos x} f(x) + c$$ The problem now becomes finding $f(x)$, which we can do through some rearrangement. Rewriting the problem to fit in $g'(x)$, the problem becomes: $$I = \int e^{x\sin x + \cos x} \left( x\cos x \cdot x + \frac{\sec x}{x^2} - \frac{\tan x \sec x}{x}\right) dx$$ We can see that the first term in the bracket implies that $f(x) = x$, but $f'(x) \ne \frac{\sec x}{x^2} - \frac{\tan x \sec x}{x}$. It's easy to see that the last two terms have some kind of pattern going on, as $\frac{d}{dx}\sec x = \sec x \tan x$ and $\frac{d}{dx} \frac{1}{x} = -\frac{1}{x^2}$. The last two terms can be rewritten as $\frac{d}{dx} \left( \frac{\sec x}{x}\right)$. Go through the above steps once again if you're unsure of what is happening, because this is important. The integral can then be rewritten as: $$I = \int e^{x\sin x + \cos x} \left( x\cos x \cdot x - \frac{d}{dx} \left( \frac{\sec x}{x}\right) \right) dx$$

We're finally getting somewhere! We had initially assumed that $f(x) = x$, but now, seeing the differential term in the bracket, let's assume $$f(x) = x - \frac{\sec x}{x} \implies f'(x) = 1 - \frac{d}{dx} \left( \frac{\sec x}{x}\right)$$

Also, $g'(x)f(x)$ then becomes $$g'(x)f(x) = x\cos x \left(x - \frac{\sec x}{x}\right) = x\cos x \cdot x - 1$$

Adding them together, we get $$g'(x)f(x) + f'(x) = x\cos x \cdot x - \frac{d}{dx} \left( \frac{\sec x}{x}\right)$$

Which is the term in the brackets in the integral. Thus, $f(x) = x - \frac{\sec x}{x}$. We have now solved our integral, and the answer is $$\boxed{I = e^{x\sin x + \cos x} \left( x - \frac{\sec x}{x}\right) + c}$$
# Ethnic rebels hope for peace under new president

_President-elect Htin Kyaw stands in a session of Burma's Union Parliament, with unelected military reps in the background. (PHOTO:DVB)_

Ethnic leaders and armed group representatives have welcomed last week’s appointment of Htin Kyaw as president of the National League for Democracy government, with some voicing confidence in his government’s abilities to revive Burma’s stalled peace process.

“Although Aung San Suu Kyi is not the president, she will be able to work harmoniously with the president. So I believe the democratic reform process will be successful,” said Khun Okka, a colonel of the Pa-O Liberation Army and joint-secretary of the United Nationalities Federal Council, an alliance of ethnic armed groups.

Dawng Kha, spokesperson for the Kachin Independence Army, said, “The election of Htin Kyaw signals the strength of the NLD government and its ability to implement plans for a better country.”

ManamTu Ja, chairman of KachinStateDemocracy Party, which has four seats in the Kachin State parliament and one in the national parliament, said the NLD had made a good decision in selecting Htin Kyaw.

“The NLD has made the best choice since Daw Aung San Suu Khyi cannot become president, though she should be. Its decision to choose the Chin ethnic Henry Van Thio (as vice-president) also shows its pays attention to ethnic peoples,” he said.

On 15 March, Burma’s bicameral parliament voted to elect Htin Kyaw, a loyal aid of Suu Kyi, to become president in her stead, as the 2008 Constitution blocks her presidency because her sons are British nationals. The army-drafted charter is also a stumbling block on the road to creation of a federal union, as it gives the central government extensive control over ethnic states.

The NLD government will now need to work with the powerful army and ethnic rebels to negotiate a nationwide ceasefire that includes all rebel groups, before trying to amend the Constitution in order to devolve power to the states.

Khaing Thukha, a spokesperson for the United League of Arakan, said he hoped the first democratically elected government in decades would make steps to start a dialogue with ethnic minorities over their long-standing demands for the creation of a federal union.

“Equality is what we want to see under the new government. If all the new leaders work in genuine spirit and goodwill towards striving for equality and genuine federal union, then we would see some progress,” said Khaing Thukha.

His organisation is the political wing of the Arakan Army, a rebel group that was not recognised by the government during ceasefire talks and has clashed with the army in western Arakan and Chin states.

“We want to see the new president implement the desires of the public,” added Mai Aik Kyaw, spokesperson of Ta’ang National Liberation Army (TNLA). 

Its ethnic Ta’ang (Palaung) rebel forces have clashed with the Shan State Army-South for several weeks now over who controls parts of northern Shan State and the fighting has displaced thousands of civilians.
### Rustic – Celtic Tree – Deluxe water bottle holder

$115.00
    
    
      Stain - Rustic
      Top lacing - Saddle tan
      Stitching - Brown
      Shoulder Strap - Brown
      Pattern - Lasered - Celtic Tree
      Pendant – Tree of life
      Bottle - 800ml
    All Deluxe Vesica water bottle cases are made from premium natural veg-tan leather. This case has been lasered with a Celtic tree and hand stained. Stained veg tan hides may vary slightly in texture, stain, and tone, creating one of a kind pieces. The quality of the leather and the character they bestow are incredible. Your case will age with beauty and will become apart of you for life. Keeping you plastic-free and hydrated for years to come. Every Vesica water bottle case is made in Brisbane – Australia from genuine leather and is hand stitched.
    
    
    

### Rustic – Vitruvian man – Deluxe water bottle holder

$115.00
    
    
      Stain - Rustic
      Top lacing - Whiskey
      Stitching - Brown
      Shoulder Strap - Brown
      Pattern - Lasered - Vitruvian man
      Pendant – Tree of life
      Bottle - 800ml
    All Deluxe Vesica water bottle cases are made from premium natural veg-tan leather. This case has been lasered with the Vitruvian Man and hand stained. Stained veg tan hides may vary slightly in texture, stain, and tone, creating one of a kind pieces. The quality of the leather and the character they bestow are incredible. Your case will age with beauty and will become apart of you for life. Keeping you plastic-free and hydrated for years to come. Every Vesica water bottle case is made in Brisbane – Australia from genuine leather and is hand stitched.
超半新居甲醛超标因床垫 新标准出台为棕床垫把关

只有使用纯天然乳胶生产的棕床垫，才能保证卧室内空气清新没有有害物质。

红网长沙10月24日讯（记者 汤红辉 实习生肖轲）在中国质量万里行湖南市场调查中心日前公布一组数据中，对长沙350户业主共计980间新装修不超过一年的住宅进行实测和入户调查，结果表明有51%的房间甲醛出现超标现象，其中有不少是因使用了劣质的棕纤维床垫所致。今日，湖南质监部门透露，作为棕床垫生产国家标准的《软体家具棕纤维弹性床垫》已通过国家标准审定会审定，有望今年年底颁布实施。

**超半数新房卧室甲醛超标**

10月12日，在由湖南省委宣传部、省质监局等6部门主办的“质量兴湘万里行”总结大会上，中国质量万里行湖南市场调查中心公布了对长沙楼盘新装修住宅调查结果，甲醛超标占总房间数的一半还多。

调查结果显示，在对长沙21个楼盘中350户业主共计980间新装修不超过一年的住宅进行的实测和入户调查，结果表明，不合格的居室共有500间，占总房间数的51%。

调查显示，造成室内甲醛超标的主要原因是房屋装修材料的甲醛释放以及家具产品的甲醛超标。而造成卧室甲醛浓度高的主要原因就是床垫内空气甲醛浓度较高。床垫内空气甲醛浓度与床垫的材质有密切关系，其中，在一面是弹簧、一面是椰棕的弹簧棕垫中，空气甲醛浓度超标率达到了78.5%。

甲醛是世界卫生组织公认的一类致癌物，长期接触低剂量甲醛可引起慢性呼吸道疾病，女性月经紊乱，妊娠综合症，染色体异常，引起新生儿体质降低、智力下降，甚至引起白血病、鼻咽癌、喉头癌等，因此相关业主必须对此保持警惕。

**百多株山棕树叶才制一床垫**

“有些产品一张山棕床垫卖价仅几百元，这对我们的产品来说，连材料钱都远远不够。”在全国植物纤维强性床垫行业中产量和销量都位居第一的贵州大自然科技有限公司总经理阮运强表示。

阮运强介绍，一株山棕树正常年份只能剥8片左右的棕叶，而一张床垫需要一百多株棕树的棕叶，山棕基本上分布在我国的云贵高原，靠野生为主，这些都限制了山棕床垫的产量。更为重要的是，现代化的棕床垫使用纯天然的乳胶，而乳胶价格上涨势头很快。去年网上报价每吨还只有9千元，而现在每吨的网上报价已突破2万元。与之相比，化学胶剂价格在每吨三四千元左右，而化学胶剂甲醛含量往往偏高。

“在这种情况下，少数不法商贩为追求高额利润，便采取以次充好、以假充真等不法手段，坑骗消费者。”湖南省质监局相关工作人员介绍，除了用化学胶剂生产床垫，有的还用泡沫、废旧回收海绵等材料作为填充物，夹在床垫中，然后在包装时用面料缝合紧，使消费者在购买时难以发现问题。

**新标准出台为棕床垫把关**

从质监部门获悉的信息表明，作为棕床垫生产国家标准的《软体家具棕纤维弹性床垫》已于去年底通过了国家标准审定会的审定，有望今年年底颁布实施。

该标准把棕纤维床垫根据蕊材料不同，分成山棕、椰棕、油综和其他棕纤维几种。在卫生要求方面也作出了明确要求，如“蕊料不应使用废旧材料，不应夹杂塑料编织材料、秸杆、刨花、纸屑等杂物”、“所用絮物不应漂白”，此外，对面料外观、缝纫、缝边、面料及复合面料物理性能、芯料外观质量等均有明确的要求。

“新标准实施后，是对棕床垫行业套上了一个‘紧箍咒’，对整个行业生产提出了更高的要求，最终目的就是在维护消费者权益的同时促进行业健康发展。”该标准的起草者之一、中国家具天然植物纤维材料研发中心高级工程师林坚认为。

为此，有关部门提醒消费者在购买棕床垫时可以能过以下手段维权：购买时要求打开面料直接观察棕丝，如大自然等品牌企业的棕床垫面料是用拉链封口的，可以随时打开检查；要求商家在开发票时注明是否使用的“天然乳胶”，因为床垫的甲醛主要来生产用的胶水；选择知名企业的品牌产品。
## 大风扬尘天气出行提示

在大风扬尘天气出现时，需要外出的朋友一定要做好相应的防护措施，特别是走路、骑车需要经过狭长通道，或需途径广告牌和老树下的朋友，一定要减少逗留时间，以防发生危险。

**1、走路、骑车尽量避开“狭管效应”**

要注意走路、骑车时少走高层楼之间的狭长通道。因为狭长通道会形成“狭管效应”，风力在通道中会加大，从而给行进中的行人带来一定的危险。

**2、要注意不要在广告牌和老树下长期逗留。**

有的广告牌由于安装不牢，在强大风力的作用下有可能倒塌；而一些老树上于已经枯死，根基不牢，也有可能在大风天气中断裂，对行人造成危险。

**3、要注意轻型车的安全。**

由于轻型车重量较轻，所以在高速行驶中可能被大风掀起。应在轻型车上放一些重物，或者慢速行驶。

**4、要注意尽量少骑自行车。**

因为在大风天气中，顺风或逆风虽不会对骑车造成太大危险，但是一旦侧风向骑行，有可能被大风刮倒，造成身体损伤。

**5、外出做好防护工作**

要注意携带口罩、纱巾等防尘用品，以免沙尘对眼睛和呼吸道系统造成损伤。
# Social Distancing lesson: From Bison?

> There was a herd of bison walking right toward me at @YellowstoneNPS today! pic.twitter.com/sdrBvojpwF
> 
> — Deion Broxton KTVM (@DeionNBCMT) March 25, 2020

Sometimes you learn lessons about social distancing from unexpected places. Montana television reporter, Deion Broxton learned that the hard way. While reporting at Yellowstone National Park about the parks closing on Wednesday, March 25th, Broxton noticed a herd of bison walking toward him.

Although the bison are off camera, Broxton’s reaction tells the whole story.

“Oh my God. Oh my God,” Broxton said.

“Oh no, I ain’t messing with you,” he said as he grabbed his camera. “Oh no.

Oh no. Oh no I’m not messing with you.”

Without turning off the camera, he stashed it in his trunk and moved to a safe place. Then he turned the camera on the massive bison. Bison are the largest land animal in North America and can weigh over a ton. The Parks service says they can jump as high as six feet and run up to 40 miles an hour. They have injured more people at Yellowstone than any other animal, as recently as last year, when they charged a 9-year-old girl who had gotten too close. After being flung in the air, the child was taken to a local hospital and treated.

Yellowstone National Park said that Broxton handled the situation perfectly. Distance is the safest option when it comes to bison. And Corona Virus.

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#  Ruby Ruby：极致的脚本语言 

"Ruby 的许多特性强烈地偏向对脚本语言的良好支持。在我看来几乎从任何一个可以想象的方面来说 Ruby 都要比 Python 更加合适作为脚本语言的默认选择。比如 Ruby 支持任意地方法覆写，你甚至可以覆写在 Int 中定义的 + 方法从而立刻把 REPL 给崩掉… 比如 Ruby 非常好地普及了守护（guard）的使用，从而使得大量的 idiom 有了 one-liner；比如这是一门动态类型语言，编译器只会阻止很少的事情；比如 Ruby 简洁的闭包语法（事实上 Rust 中的闭包语法正是沿袭自 Ruby）、do 语句以及对各种常用集合操作的良好支持，使得以闭包作为参数的标准库 API 基本可以替代循环；比如各种高度动态的语言特性和内省（introspect）机制。良好和高度动态的设计使得 Ruby 不仅适合编写各种 dirty but works 脚本，同样也适合工业的快速成型。

"

Hope you are still using Ruby during your daily work. I am using Ruby only when doing Leetcode questions, or when I have the power to decide which language to use. Taking Ruby back is the responsibility of us all.

引用自哪

1 楼我的评论被删除了。有什么问题吗？请删除的管理员回复下。谢谢。

最近总有纯英文回复的机器人，估计看是纯英文就给删了

恢复了，估计是看错了。

最近纯英文的机器人挺多的，他们的回答中一般带有链接

可能是我那天批量处理，看走眼了

机器人？

除了速度，综合来讲可以完败其它语言，还好现实世界有不少的事件不是时间敏感的，而且 ruby 速度也没那么不堪

绝大部分公司的核心业务并不需要靠编程语言的性能来驱动
09/02/2016 · Hey guys in this video I'll be showing you how to make Michael look like Max Payne from the third part. Follow me on Twitter! https. @Barak101 Max Payne with his clothes and facial animations to GTA V. 6 de noviembre de 2016. Barak101 Autor @Liberty-gamer1247 this max payne with the clothes. @allthenamesaretaken like now you can put that in michael. 3 de julio de 2017. 12/12/2019 · Welcome to GTA5 Select one of the following categories to start browsing the latest GTA 5 PC mods:. Max Payne 3 Assets for Michael 0.2 by Dennis Stanistan 1,061 · 30 · Max Payne 1 [Add-On Ped]. Max Payne Loading Theme For. BIG HEADS UP, VOICE PLAYER DOES NOT WORK IN THE RECENT UPDATE TO GTA V. DOWNGRADE YOUR GTA V TO A VERSION BEFORE THE RECENT UPDATE OR WAIT FOR ANOTHER UPDATE ON VOICE PLAYER MOD I have decided take it upon myself to make some voice clips for the Voice Player Addon mod. This gives whatever character I have added to my GTA V more.

As I was playing through the story mode I kept feeling like the two characters are actually kind of similar. One of Michael's suits is basically the suit Max wears in the early parts of 3, and one of his preset outfits has a jacket and jeans combo that looks and feels very similar to the outfit from the first Max Payne. This mod replaces Michael's face textures, clothing and haircut with ones from Max Payne 3. Version 0.2 - Replaced Michael's watch with Max's watch - Replaced Michael's underwear with Max's underwear - Replaced Michael's shorts with Max's shorts - Added a dirty version of the Hawaiian shirt - Added a blue shirt from Max Payne 3 Version 0. Ever wanted to play as Max Payne in GTA V? Of course you do! But not this probably not the Max Payne you were thinking of. This mod changes Micheal's face to Max Payne from Max Payne 1, His only outfit is also Max payne's clothing. Simple mod which replaces Michael's Dirty tanktop texture with Max Payne 3 one How to get the tanktop? 1.Trainers 2.Play the game until Michael leaves Los santos, then you should have a dirty tanktop istnead of Clean one, Wear it and there you go! A fat bald dude with a bad temper. I thought it was about time to go back and do some work on this mod. So basically what it does is change Michael to Max Payne. You start out as MP2 Max in the prologue, and as you get to 2013, he turns to MP3 Max. The face textures are straight from MP2 and MP3. I know Max's MP3 face has bushy eyebrows, but I.

Michael De Santa, formerly Michael Townley, is one of the three protagonists in Grand Theft Auto V, along with Franklin Clinton and Trevor Philips. Michael's story centers around how his seemingly idyllic and halcyon lifestyle is brought to a halt as his past demons and morally compromising. `@Barak101 Max Payne with his clothes and facial animations to GTA V. November 06, 2016. Barak101 Author @Liberty. just asking because im working on a max payne ped myself May 23, 2017. Barak101 Author. July 03, 2017. Barak101 Author. @allthenamesaretaken like now you can put that in michael. July 03, 2017. allthenamesaretaken @Barak101.`
## WRUW 2/11 through 2/17/2018?

Vega today!  
  
  
  


1957 Bulova Senator I just finished up getting its wrist test. 

Dang! What an awesome design. 

>   
>   
>   
> 

Posted: **Mon Feb 12, 2018 2:08 pm**

by **grumpyguy**

1953 Elgin Spencer in white gold. 

Posted: **Mon Feb 12, 2018 2:30 pm**

by **NWI Mark**

A very nice Senator Carl. Today I have Incoming. A new to me 1953 Hamilton Illinois Automatic “A” with the Eterna ball bearing mvmt. Thanks Dan.

    image.jpg (2.01 MiB) Viewed 192 times

Posted: **Mon Feb 12, 2018 4:54 pm**

by **GreenBayStamps**

Hey Mark! I like the Automatic "A"!  
  
For me this Monday the **62' Accumatic A-501** , the bracelet is a Gemex and I decided to try it and "I Like It alot!"  
  
The crystal now has a ring in it, I believe that would have been the way it was issued. SWEET! Hands refinished and lumed.   
  
Just a great watch, Timeless!

Posted: **Tue Feb 13, 2018 5:19 pm**

by **Tank**

Went modern tonight on an early Valentine's day dinner with the Seiko watches my wife and I bought for each other.

Posted: **Wed Feb 14, 2018 11:58 am**

by **stryfox**

The Elgin Mainliner in Solid Gold today. I just put it on this pigskin strap. Not sure about it. 

    CC97AC44-0C59-4AD3-98D3-E28DB7FE9ABF.jpeg (1.41 MiB) Viewed 126 times

Posted: **Wed Feb 14, 2018 12:05 pm**

by **tnwareagle89**

Mido Ocean Star Powerwind (ca. 1960s) for Wednesday  
original bracelet  
  
Happy Valentine's Day everyone

Posted: **Wed Feb 14, 2018 12:26 pm**

by **GreenBayStamps**

For Valentines Day I'm wearing:  
  
72' Day N' Date ST-5501 with the red dial!   
  
Happy Valentines Day!
# 云南兔儿风

菊科兔儿风属植物

云南兔儿风（Ainsliaea yunnanensis Franch.）是菊科兔儿风属植物，根状茎圆柱形，直伸或弯曲，叶基生的密集，呈莲座状，大小极不等，叶片近革质，卵形、卵状披针形或披针形，瘦果近纺锤形，无明显纵棱，长约5毫米，密被白色长柔毛。

百科图谱

云南兔儿风

百科知识树 · 植物

云南兔儿风

三脉兔儿风

纤枝兔儿风

狭翅兔儿风

中文名
    云南兔儿风

拉丁学名
    Ainsliaea yunnanensis Franch. [2]

界
    植物界

门
    被子植物门

纲
    木兰纲

目
    菊目

科
    菊科

属
    兔儿风属

种
    云南兔儿风

分布区域
    广东省, 四川省, 贵州省, 云南省

## 目录

  1. 1形态特征
  2. 2生长环境
  3. 3分布范围
  4. 4主要价值



## 形态特征

云南兔儿风(20张)

多年生草本。根状茎圆柱形，直伸或弯曲，直径3-6毫米，稀有达1厘米者，根颈密被绵毛；根近肉质，粗壮，簇生。茎直立，单一，不分枝，花葶状，高20-60毫米，基部直径1.5-2.5毫米，多少被绵毛。叶基生的密集，呈莲座状，大小极不等，叶片近革质，卵形、卵状披针形或披针形，长2-6厘米，宽1-4厘米，顶端短尖，基部圆或截平，有时沿叶柄短下延，两侧常不等，边缘有胼胝体状细齿，上面被具疣状基部的糙毛，但在花期多数毛脱落而仅存粗糙的疣状凸起，下面被糙伏状长柔毛，常于脉上较密；中脉在下面明显凸起，侧脉4-5对，很纤细，弯拱上升，虽有少数分枝，但不结成网眼；叶柄长2-7.5厘米，无翅，被长柔毛，基部明显扩大；茎生叶与基生叶近同形，少而小，长8-20毫米，宽3-7毫米，被毛，下部的具3-5毫米的短柄，上部的无柄。头状花序具花3朵，花期长达22毫米，沿茎的上部一侧或于同一侧的短枝上通常3-6密集，平展或下垂，复作间断的穗状花序式排列；总苞圆筒形，直径约6毫米；总苞片5-6层，边缘和顶部带紫红色，背部均具1脉，多少被疏柔毛，外1-3层卵形，长2.5-3.5毫米，宽1.5-2.2毫米，顶端短尖，中层狭长圆形，长9-13毫米，宽2-2.5毫米，顶端渐尖，最内层披针形，长约14毫米，顶端长渐尖，边缘薄，膜质，基部楔状渐狭；花托较宽，直径约1.3毫米，无毛。花淡红色，全部两性；花冠长16-18毫米，花冠管向上略增大，长约7.5毫米，于管口上方约2毫米处5深裂，裂片偏于I侧，长圆形，长6.5-8毫米，宽约I毫米，顶部卷曲；花药外露，长约8毫米，顶端圆，基部的尾挺直，长2-2.5毫米；花柱分枝略伸出于药筒之外，头状，内侧略扁，长约0.2毫米。瘦果近纺锤形，无明显纵棱，长约5毫米，密被白色长柔毛。冠毛黄白色，羽毛状，长约9毫米，基部联合。花期9月到翌年1月。 [1] [3]

## 生长环境

生长于海拔1700-2700米的林下、林缘或山坡草地上。

## 分布范围

分布于云南（中甸、剑川、鹤庆、大理、景东、禄劝、武定、寻甸、嵩明、富民、昆明、澄江、元江、石屏、蒙自、砚山）、贵州（赫章、纳雍、盘县、贵阳）及四川西南部。 [1]

## 主要价值

医药：全草（燕麦灵）：苦，平。祜风湿，舒筋，续骨。用于跌打损伤，骨折，风湿筋骨痛。

参考资料

  * 1

云南兔儿风．植物智 [引用日期2019-12-19]
  * 2

云南兔儿风 Ainsliaea yunnanensis|iPlant 植物智——植物物种信息系统．植物智 [引用日期2023-03-06]
  * 3

云南兔儿风|Ainsliaea yunnanensis．植物志库 [引用日期2023-07-06]



学术论文

  * 钱义咏.云南兔儿风属一新种．《CNKI》，2000
  * 王蓉，孙珍，王阿利，院珍珍等.云南兔儿风小极性成分GC-MS分析．《CNKI;WanFang》，2013
  * 钱义咏QIAN等.云南兔儿风属一新种．《热带亚热带植物学报》，2000
  * 吴相雷，熊筱娟，吴志军等.云南兔儿风的五环三萜类化学成分研究．《广西植物》，2015
  * 李金杰，王阿利，院珍珍等.云南兔儿风中的三萜类成分．《CNKI》，2013
#  錦正茂電磁鐵亥姆霍茲線圈電源

產品名稱: **錦正茂電磁鐵亥姆霍茲線圈電源 **

產品型號: 

產品展商: 錦正茂儀器

產品文檔: 無相關文檔

  
  


**錦正茂電磁鐵亥姆霍茲線圈電源** 的詳細介紹

**產品概述****：**

**錦正茂電磁鐵電源** 本電源為高穩定度的雙極性恒流電源，**廣泛應用于電磁鐵、亥姆霍茲線圈等感性負載的****勵磁****。** 電源采用線性電源結構，輸出電流穩定度高，紋波和噪聲低。電源輸出電流可在正負額定電流*值之間連續變化，電流平滑連續過零，可使電磁鐵或線圈產生平滑、穩定的磁場。

配合本公司的高精度高斯計和探頭（選件），電源可工作于磁場模式。在磁場模式下，可直接設定磁場值，電源會調節輸出電流使電磁鐵快速達到設定磁場，方便快捷，磁場穩定?？呻S意單獨控場，也可連續掃描磁場。電流模式和磁場模式可根據需要隨時切換，操作靈活。 

**功能和特點**

1) 雙極性恒流輸出

l 電源輸出電流可在正負額定電流*值之間連續變化

l 電流平滑過零無斷點，非開關換向

l 輸出電流、電壓四象限工作（適合感性負載）

l 電流變化速率可設置范圍為0.0007～0.3 F.S./s  (F.S.為額定輸出電流*值）

l 交流輸入，單相220V±10%（50Hz/60H**z）或 三相380V±10%（50Hz/60Hz）

l 輸出電壓范圍0-±200V，輸出電流范圍0-±1000A，輸出功率*值200KW

2) 電流穩定度高，紋波低 

l 電流穩定度：優于±50ppm/h（標準型）； 優于±5ppm/h（高穩型）

l 電流準確度：±（0.01%設定值+1mA）

l 電流分辨率：20 bit，例15A電源，電流分辨率為0.03mA

l 源效應：≤ 2.0×10-5 F.S.（在供電電壓變化10%時，輸出電流變化量）

l 負載效應：≤ 2.0×10-5 F.S.（在負載變化10%時，輸出電流變化量）

l 電流紋波（RMS）：小于1mA

3) 兩種輸出模式 

l 電流模式：直接設定磁鐵或者線圈中的電流 

l 磁場模式：直接設定磁鐵或者線圈中的磁場大小 

l 閉循環調節模式，恒定磁場值 

注意：磁場模式需配合本公司的高精度高斯計及探頭 

4) 兩種操作方式 

l 本地控制采用高清觸摸屏顯示和操作 

l 遠程可通過RS232接口由計算機控制，RS485、LAN、USB可選 

5) 多種保護功能 

l 輸入電源掉電保護（輸入電源掉電時，內部保護吸收感性負載反灌能量） 

l 過流保護（自動降流，不可控過流則關斷電源輸出并報警） 

**風冷系列電源技術參數**

**型號** |  **JCP-****5****/****40** |  **JCP-****5****/****80** |  **JCP-****5****/120** |  **JCP-****10****/****40** |  **JCP-****10****/****80** |  **JCP-****10****/120**  
---|---|---|---|---|---|---  
**輸出** |  **輸出類型** |  **雙極性恒流輸出**  
**額定電流** |  **±5A** |  **±10A**  
**額定電壓** |  **±40V** |  **±80V** |  **±****120V** |  **±40V** |  **±80V** |  **±****120**  
**電流穩定度** |  **標準****型**** 優于±****50****ppm/h ；高穩型 優于±5ppm/h**  
**電流****準****確度** |  **± （****0.01%****設定值 +****1****mA ）**  
**電流分辨率** |  **20 bit**  
**0.01mA** |  **0.02mA**  
**源效應** |  **≤****2.0×10****-5****F.S.****（在供電電壓變化 10%****時，****輸出電流變化量）**  
**負載效應** |  **≤****2.0×10****-5****F.S.****（在負載變化 10%****時，****輸出電流變化量）**