本帖最后由 ValleyViews 于 2015-10-8 02:24 编辑
& R! p$ Q' q# v- vaysuio 发表于 2015-10-7 04:58 & g6 r' x# J$ @ y6 B
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大侠,别用您啦,小子真担待不起,我是小弟:D: ?5 F, ]" Y4 @, K c- ?2 x! p) [
大侠这么认真,小子自然很愿意来跟大侠说一下。 @7 L5 X0 Q9 [* W/ E$ h ~0 m
四海之内皆兄弟也。
& i8 L/ P0 s4 B2 wTalking 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. ' o# g! G; ~& u% X( J3 A3 ^9 @! k
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