本帖最后由 ValleyViews 于 2015-10-8 02:24 编辑
& u9 \" W0 K. G" {- M6 \; maysuio 发表于 2015-10-7 04:58 , `# y3 _% v! C4 k4 E6 S
:), X9 f( k* e# }
大侠,别用您啦,小子真担待不起,我是小弟:D+ }( f7 _0 l( m9 c3 @' I. s8 `% u
大侠这么认真,小子自然很愿意来跟大侠说一下。
5 Z& f& o5 D" H; o% X 四海之内皆兄弟也。
9 M0 N9 c$ W/ I9 y* H& \4 J6 LTalking 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. & G+ f6 U& k( X. o. u0 M8 R
: `3 C. W+ G5 k/ m
3 W& a2 @: [3 W% x9 a |