The Panel itself has x and y coordinates.
Panel本身具有x和y坐标。
Suppose A itself is the unit vector in the y direction B Then A dot B is 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?
That element is itself a list, so the second indexing ([y]) returns one of the nested list's elements.
该元素本身也是一个列表,因此第二个索引操作([y])返回嵌套列表的元素之一。
That element is itself a list, so the second indexing ([y]) returns one of the nested list's elements.
该元素本身也是一个列表,因此第二个索引操作([y])返回嵌套列表的元素之一。
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