The structural design of a high sensitive micro hole drilling dynamometer and the working principle of the micro hole drilling force measuring system are introduced.

介绍了高灵敏度的微小孔钻削测力仪的结构设计及微小孔钻削力测量系统的工作原理。

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The deep hole drilling provides the reliable data for the deep ore-prospecting.

深孔钻进的实现，为深部地质找矿提供可靠资料。

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The compound material of resin matrix may produce serious smirch phenomenon during the minute hole drilling.

以树脂为基体的复合材料在微孔加工中会产生严重污斑现象。

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Useful how-to advice, such as drilling a hole in a ceramic pot without shattering it.

FORBES: Gardening

Along with others, he began drilling a 2, 000-foot hole into the ground, working three- or four-hour -- three or four days at a time without any sleep.

WHITEHOUSE: The 2011 State of the Union Address: Enhanced Version

Along with others, he began drilling a 2, 000-foot hole into the ground, working three or four hour -- three or four days at a time without any sleep.

CNN: Transcript: Obama's State of the Union speech