Let me re-explain quickly how I got a normal vector for the cylinder.

我来再次解释一下如何得出这个圆柱面的法向量。

youdao

Vicki Vale: Well, face it. You re not exactly normal, are you?

维可·瓦丽：好了，正视事实吧。你不是个正常人，不是吗？

youdao

Normal age-re-lated memory loss is also linked to a loss of acetylcholine.

正常与年龄有关的失忆也与乙酰胆碱的流失有关。

youdao

Normal age-re-lated memory loss is also linked to a loss of acetylcholine.

正常与年龄有关的失忆也与乙酰胆碱的流失有关。

youdao