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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 q( l8 Z. b* k! s请看：6 u# b0 h o" {- B% z
[url]http://cr4.globalspec.com/thread/51795 [/url]& Q2 a2 W& o9 R" K* y2 y
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7 w( z+ T& h; \# VASME Y14.5-2009:
8 \, ^% e: I* t/ |; F: h1.6.2 Decimal Inch Dimensioning
, }9 z8 I0 v) H5 ^) [# SThe following shall be observed where specifying decimal inch dimensions on drawings:3 s% b/ T6 T2 A" z- r# S0 F' s
(a) A zero is not used before the decimal point for values less than 1 in.
! h. P9 Q/ [- m) @# a; v(b) ............
5 [, _- S+ c# E. N( \- J-------------------------------------------------------------------------------------------------- Q, {; u4 Z( e
But, on the other hand .........
) ]( g+ c6 I8 Q- N3 ]+ T2 U A1.6.1 Millimeter Dimensioning- m9 m V( x7 E6 U
The following shall be observed where specifying millimeter dimensions on drawings:/ U2 v, P' s' i' J, o
(a) Where the dimension is less than one millimeter, a zero precedes the decimal point. See Fig. 1-4.6 ^# ^% ^( t0 Y: T l8 j
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发表于 2010-3-13 16:06:59
