本帖最后由 ValleyViews 于 2015-10-8 02:24 编辑
6 O8 B% [# y( T+ Z4 Z8 u uaysuio 发表于 2015-10-7 04:58 * A6 k2 v2 J5 @. [8 T) r4 v
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大侠,别用您啦,小子真担待不起,我是小弟:D
+ |* E' j6 o+ I大侠这么认真,小子自然很愿意来跟大侠说一下。
8 S+ ~9 D3 @* K% S 四海之内皆兄弟也。
, |3 i7 d; R: V% q3 ?+ JTalking about your explanation, I think that every sentence is understandable except this one: “Line elements is a 2D element, like it just has dimensions in X and Y, and NEVER think about you can measure line elements in Z axis.” My understanding is that even though you measure line elements in specified view direction ( either front view or side view ), it doesn't mean the measured line element is a 2D element. Furthermore, actually it is still a 3D element. When you measure it with an indicator, what will you get? You must get some values in Z axis.
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