Hand drilling also decreases the risk of breaking off a guide wire in the scaphoid.

手摇钻也可以减少导针在舟状骨内折断的风险。

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On the other hand, drilling and blasting are main construction method of the underground project excavation, it can't be ignored that the vibration response of surrounding rocks on dynamical loads.

另一方面，钻爆法仍然是地下工程开挖的主要施工方法，围岩在动态荷载作用下的振动响应也是一个不可忽视的问题。

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It would hand state legislatures drilling authority and half of any federal royalties or revenues from drilling.

FORBES: Gasp

The expedition's other research tasks include drilling through the ice by hand, on average four times a day.

BBC: Arctic team: 'London, we have a problem'

The loss of the hi-tech equipment has focused attention on the data gathered by the tried-and-tested method of drilling through the ice by hand.

BBC: Arctic team gives up on ice radar