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发表于 2010-3-13 14:03:25
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来自： 中国江苏常州
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) \2 T9 C7 N; b* Q* Z" h5 l6 g [url]http://cr4.globalspec.com/thread/51795 [/url]" |0 Z" M* D+ [) {
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ASME Y14.5-2009:
8 I* S e4 h: ]- J- T1 w, ^* X1.6.2 Decimal Inch Dimensioning
6 d, w- c9 s2 y% pThe following shall be observed where specifying decimal inch dimensions on drawings:
0 M' }( ]- Q/ K! } K, C0 Z(a) A zero is not used before the decimal point for values less than 1 in.
+ l3 B3 c: I8 J, D8 _(b) ............# _- v4 {0 L, G- p
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# j& e: X0 N9 d8 x9 B. UBut, on the other hand .........# _ ^) E$ d9 q" G" |
1.6.1 Millimeter Dimensioning
5 c+ B' Z/ `9 Y8 jThe following shall be observed where specifying millimeter dimensions on drawings:7 g5 V* W- A$ v7 S3 Q- l- k
(a) Where the dimension is less than one millimeter, a zero precedes the decimal point. See Fig. 1-4.& U' w8 S, C( D- E' D! q5 h
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发表于 2010-3-13 16:06:59
