Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.

[EX Q]: Cell machines have large tool magazines to carry enough tools to do all of the various operations on each of the different parts, large worktables or the ability to change worktables, and special provisions in the controller for data inputs from other CNC machines. Attached to the side of the machine is a magazine of different tools. A transfer arm, sometimes called the tool bar, removes a tool from the machine, places it into the magazine, selects a different tool from the magazine, and returns it to the machine through instructions in the program. The fourth category covers modern machine tools and processes for machining ultrahard metals not machinable by older methods. 1 Machine tools that form parts by removing metal chips from a workpiece include lathes, shapers and planers, drilling machines, milling machines, grinders, and power saws. Modern machine tools cut or form parts to tolerances of plus or minus one ten-thousandth of an inch (0.0025 millimetre). In special applications, precision lapping machines can produce parts that are within plus or minus two millionths of an inch (0.00005 millimetre). The motions that are used in machine tools are called axis, and are referred to as X (usually left to right), Y (usually front to back), and Z (up and down). The work-table may also be rotated in the horizontal or vertical plane, creating a fourth axis of motion. After the advent of the steam engine, material goods were produced by power-driven machines that could only be manufactured by machine tools. Machine tools (capable of producing dimensionally accurate parts in large quantities) and jigs and fixtures (for holding the work and guiding the tool) were the indispensable innovations that made mass production and interchangeable parts realities in the 19th century. Machine tool: Machine tool, any stationary power-driven machine that is used to shape or form parts made of metal or other materials. The shaping is accomplished in four general ways: (1) by cutting excess material in the form of chips from the part; (2) by shearing the material; (3) by squeezing metallic parts to the desired shape; and (4) by applying electricity, ultrasound, or corrosive chemicals to the material. Welding the base. 1 1 The base of the machine is either cast or welded together. It is then heat treated to remove casting or welding stresses and to normalize the metal for machining. 2 2 The ways are ground flat, bolted, and pinned to the base. The controller. 1 5 The computer, or controller, is an electronic assembly separate from the rest of the machine. It has a climate-controlled enclosure mounted on the side of the frame or in an operator's console. 2 6 The assembled machine is test run for accuracy. In particular, machine-driven tools became necessary to manufacture the parts for the machines that now made goods formerly produced by hand. Most common machine tools were designed by the middle of the 19th century. Query: how is made machine tools
[EX A]: Machine tools that form parts by removing metal chips from a workpiece include lathes, shapers and planers, drilling machines, milling machines, grinders, and power saws.

[EX Q]: The anagen phase is known as the growth phase. It begins in the papilla and can last from two to six years. The span at which the hair remains in this stage of growth is determined by genetics. The longer the hair stays in the anagen phase, the longer it will grow. During this phase, the cells in the papilla divide to produce new hair fibers, and the follicle buries itself into the dermal layer of the skin to nourish the strand. Originally Answered: How long do your eyebrows take to grow back if you shave them off? For a post-pubescent or young adult, it takes about 65 days for eyebrows to regrow following plucking. For a mature adult, it will take about 56 days for eyebrow hair to regrow and about 73 days for a person at retirement age. Some people have difficulty growing their hair beyond a certain length because they have a short active phase of growth. On the other hand, people with very long hair have a long active phase of growth. The hair on the arms, legs, eyelashes, and eyebrows have a very short active growth phase of about 30 to 45 days, explaining why they are so much shorter than scalp hair. Catagen How long does it take to grow long hair? wikiHow Contributor Typically, hair grows 1/2 an inch (1.5cm) in a month and if you take good care of your hair and don't cut it for a year, your hair will grow about 6 inches (15cm) in a year. Thanks! Yes No It takes approximately six to eight weeks to grow enough hair for a fade or basic man's haircut after you shave your head. If you wish to grow your hair out longer, it will take an additional month for each 1/2 inch of growth. Hair growth after a FUE transplant follow the general growth after hair transplantation. The hair will stay and even grow on the grafts initially, but it falls and hair follicles enter their resting phase. That usually takes about 2 months. After 2-3 months patients can see gradual growth of the hair. This stage make take up to 6 months. 4. Keep your scalp healthy. Think of your hair like a tree: If the soil and roots aren't taken care of, the tree can't grow tall and solid. Hair growth starts with a healthy scalp, explains celebrity hairstylist and WEN founder Chaz Dean. one month after: real hair starts to grow at its normal rate two months after: an inch of hair How long it takes to grow back a full head of hair (and pubic hair, lashes, and brows if you lost them too) varies from person to person. how long will it take more ;(.. i need my hair to grow 1-2 inches more will it be that long in 1 week if I keep doing this everynight before bed.. Reply Bianca (May 2012) The growth of human hair occurs everywhere on the body except for the soles of the feet, the lips, palms of the hands, some external genital areas, the navel, scar tissue, and, apart from eyelashes, the eyelids. Query: how long it takes for small hairs to grow
[EX A]: It takes approximately six to eight weeks to grow enough hair for a fade or basic man's haircut after you shave your head.

[EX Q]: On the basis of the above-mentioned reasons, a pregnancy test can show a false positive result. The hormone HCG is the reason of everything. Its level goes down slowly, consequently, the remnants of the hormone are still present in the body sometimes for months after miscarriage. Other Causes of Two Strips After Miscarriage. Woman adheres to a diet. Pregnancy after miscarriage: What you need to know. Pregnancy after miscarriage can be stressful and confusing. When is the best time to get pregnant? What are the odds of miscarrying again? Get the facts about pregnancy after miscarriage. By Mayo Clinic Staff 120 comments. 1 I had an abortion two weeks ago. I don't have any symptoms of pregnancy. 2 Thanks a lot, because yesterday I went again for the ultra sound of which they said the scan shows no pregnancy and the doctor put in the fingers inside my vagina, she said the cervix is closed I have no blood so she doesn't see any pregnancy. In some cases, the hCG levels can return to the normal level within just a few days after a miscarriage. In some other cases, the hCG levels may take a few weeks to return to the normal level after a miscarriage. Here are a few things that will help you understand the changes better: Not true all the time. I had a miscarriage, and 2 weeks later ovulated and became pregnant. I read that your HCG levels have to go back down to 0 for you to even ovulate. The doctors thought I was pregnant due to remnants too, but had my blood taken and at 3 weeks pregnant, they were over 250. positive pregnancy tests after miscarriage. I think I know the answers to this really but I need a bit of hand-holding. Last week I was 6 weeks pregnant but then had a lot of bleeding and pain. GP said miscarriage, and that I should do another pregnancy test this week to confirm. I asked him what to do if it was positive, and he said 'well I really think it will be negative'. Well, it was a strong positive. If you have stopped bleeding chances are your hcg level is returning to normal. If you had normal periods before, you could probably expect to ovulate 2 - 3 weeks after the miscarriage, and a period about 5 weeks after. Good luck! The bleeding slowed and then came back heavy again. After bleeding for two weeks straight, it lightened. Now I think it is finally over. I took another P.T. tonight to see if the HCG was finally out. It was faintly positive...so i will have to wait a bit longer. How the miscarriage occurred, such as spontaneous miscarriage or medical procedure, can also affect how fast hCG levels decrease. In general, hCG levels return to normal by 4 to 6 weeks after a miscarriage, but they may occur sooner during the very early stages of pregnancy. Placental Causes of High hCG After a miscarriage, hCG levels can sometimes remain elevated. It depends: How long for hcg to go down depends on how high it was and whether the miscarriage is complete or not. Pregnancy test is not a good way to know, since it can remain positive for many weeks after a miscarriage. ...Read more Query: how long is hcg positive after miscarriage
[EX A]:
It takes 4 to 6 weeks for HCG levels return to normal after miscarriage.