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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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6 G- d4 j# y, q( I0 `请看：
+ R) P- }6 b; ]8 L5 N6 ^8 n [url]http://cr4.globalspec.com/thread/51795 [/url]7 p3 h2 r8 a l1 S
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ASME Y14.5-2009:
T' [) B$ u6 k3 L) Y6 H: i7 B1.6.2 Decimal Inch Dimensioning
5 T1 Z% ^/ ` i) T4 pThe following shall be observed where specifying decimal inch dimensions on drawings:
/ J0 E% O c5 j& _! E' K(a) A zero is not used before the decimal point for values less than 1 in.- p$ u y; J) Y7 [
(b) ............
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But, on the other hand .........
* k' `) s5 j; ]# L$ A1.6.1 Millimeter Dimensioning! H: Z, | y, z
The following shall be observed where specifying millimeter dimensions on drawings:* y+ \) M3 h! H7 w5 b/ c
(a) Where the dimension is less than one millimeter, a zero precedes the decimal point. See Fig. 1-4.
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发表于 2010-3-13 16:06:59
