本帖最后由 ValleyViews 于 2015-10-8 02:24 编辑
+ A+ p: W- a, d. p. a; Faysuio 发表于 2015-10-7 04:58
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9 W) A/ g( i/ R. Q, q大侠,别用您啦,小子真担待不起,我是小弟:D- L: ?3 e5 k9 W4 T- o
大侠这么认真,小子自然很愿意来跟大侠说一下。 B. J* d* G2 A3 L3 ~ V$ @- ~
四海之内皆兄弟也。 # k, E5 x% H$ s' z9 E1 @
Talking 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. * {0 D) j4 a6 \
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