筒式钻头

hose bit的用法和样例：

例句

A good way to help you to improve drilling technique is to use a jet bit.能帮助你们改进钻井技术的一种好方法是使用喷射式钻头。

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发表于:2018-11-30 / 阅读(523) / 评论(0)

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发表于:2018-12-03 / 阅读(526) / 评论(0)

在家—At Home

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A bit too bright for its own good

BEIJING, Dec. 19 (Xinhuanet) -- A new film about one of the most heartrending episodes in recent Chinese history leaves more to be desired. The Flowers of War is not the first Chinese movie to tackle the painful subject matter of the Nanjing Massacre

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发表于:2019-02-07 / 阅读(385) / 评论(0)

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Poor snake

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