10159| 33
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面試被問大小螺紋區(qū)別是什么,,方知大學(xué)是混過來的 |
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點(diǎn)評
細(xì)牙螺紋密封好,,配合精度高些吧,,放松也應(yīng)該更好些,粗牙強(qiáng)度更高
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點(diǎn)評
哈哈,一代考官一代殘,,代代考官有腦殘。
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