A novel structure of motorized spindle with aerostatic bearings for micro drilling is analyzed.

针对这些要求，提出了将空气静压轴承应用于超高速微钻削电主轴支承结构中。

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Transverse excursion process of micro drill in ultrasonic longitudinal vibration drilling is analyzed by using finite element method.

利用有限元技术对微细钻头超声轴向振动钻入横向偏移过程进行深入分析。

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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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This is a combination of sophisticated steerable drilling technology using modern micro-seismic imaging and advanced material sciences, to create webs of minuscule cracks in shale and release abundant trapped natural gas.

FORBES: Egypt fallout -- follow Exxon and T Boone Pickens; go long natural gas and frack-baby-frack