iso 4183 1995 question
anybody know how the datum width of a v-belt is calculated? i don't need to know, and my curiosity isn't worth 83 bucks, but i know what the dimensions are, i just wonder what the arbitrary width is about. din and american are easy, it's top width, but why "datum width?"
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发表于 2009-9-5 19:01:24
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