4793| 10
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測量一產(chǎn)品的通孔,請教 |
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點(diǎn)評
這么大的公差有必要做通止貴嗎?用通用量具就可以測量。
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點(diǎn)評
止端?
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點(diǎn)評
你說的情況不可能出現(xiàn)
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