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通过适当的配齿,轮系可以获得很大的传动比。

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混凝土的极限压应变εcu一般为0.0033左右。

In Britain the accent you speak with, the clothes you wear and the schools you attend are all markers that identify your social class.

If the hold takes longer than anticipated, check back with the caller periodically, so they don’t feel as though they have been abandoned.

与直齿轮传动相比,斜齿轮传动更为平稳,重合度更大。

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