This paper introduces the 'structure characteristics and rock fragment characteristics of single step drill head with point pick.

介绍了单阶梯尖环齿钻头的结构特点及碎岩特点。

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"We now have a high volume process for manufacturing sodium fill valves," said Schaefer. "We drill the holes, fill them with sodium and seal them all in one step."

“我们现在拥有了一种高集成的中空充钠气门生产工艺，”Schaefer说，“钻孔填钠密封，一步就可以搞定。”

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This article probes into the process step, method and the disposal of some other basic problems of a computer-aided design for multiple spindle drill unit, which is easy to use and popularize.

本文探讨一种便于使用和推广的多轴钻组合机床计算机辅助设计的过程、步骤和方法以及其它一些基本问题的处理。

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Step one is to drill and step two is to drill.

WHITEHOUSE: President Obama at the University of Miami

And you know what the essence of their plan is going to be, which is: Step one, drill.

WHITEHOUSE: President Obama Speaks on American Energy

Your next and final step is to drill down to see what you fear is lacking in you and resolve to address that issue, not your symptoms!

FORBES: How To Make, Keep, and Prosper From New Year's Resolutions