SupposeA itselfistheunitvector in theydirectionBThen AdotBis what?
假设A是y方向上的,单位矢量,则是z方向上的单位矢量。,and,B,is,the,unit,vector,in,the,z,direction。,那A点B是多少呢?
Thememorystateofeachbyte of memoryisrepresented by one oftheselettersR,Y,G,orB.Theseletters correspond tothe colors red,yellow,green,andblue,respectively.
每个内存字节的内存状态都用下面的字母来表示R,Y,G,或者B。这些字母相应的子目分别代表的是红色,黄色,绿色以及蓝色。
So,wesaid verticallysimpleegion looks likex goesbetweenaandb,andygoes betweentwovalues thatare given byfunctionsof x.
我们说过简单的竖直区域是x在a与b之间,而y在x的函数值两个值之间。