Taking an old standard drill like single arm, and turning it in to a set, can force swimmers to think and discover.

以一个旧标准的单臂演习，并约定俗成，能强迫游泳者去思考和探索。

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Experimental results show that the thrust of such a drill is decreased by about 40% as compared with that of a standard drill and the torque by about 20%.

实验表明，这种麻花钻的轴向力较普通麻花钻降低40%左右，扭矩降低20%左右，是一种切削力小、能耗低的麻花钻。

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We can provide various types of drill pipe joints as customer's demand. All mechanical properties are beyond API standard.

我公司可按用户的要求提供各种型号的钻杆接头。各项力学性能均完全超过API标准要求。

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For first time founders, who Harris says often struggle with understanding the maximum value of the dangling carrot of stock options, he laid it out quite simply: the standard drill is a one year cliff for new employees after which stock options can begin to vest monthly or annually.

FORBES: Understanding Employee Equity: Every Startup's Secret Weapon

It was a standard practice with drill work and finished with short-yardage scrimmages as the days wind down before Saturday's annual spring game.

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