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為什么鏈條最好采用偶數(shù)鏈節(jié),? |
點(diǎn)評(píng)
當(dāng)然可以去掉一節(jié)加個(gè)過渡鏈節(jié),,但也可以在去掉一節(jié)后直接連起來,,為什么要加過渡鏈節(jié)?
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