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大佬們,,這個(gè)零件是德標(biāo)零件,,規(guī)格是DIN251,,我想知道它使用時(shí)是否要配防松墊片,。 |
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點(diǎn)評
它這是螺栓呢,,你那是螺釘,是一個(gè)東西嗎,?
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