2144| 8
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外花鍵齒數(shù)21大徑34.9小徑31.34壓力角30度 |
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點(diǎn)評
我查了一下好像也不是德標(biāo)的
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點(diǎn)評
能幫忙給查下嗎,上網(wǎng)不方便
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