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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The effect of different steelmaking processes on mechanical properties of steel, especially on impact toughness of steel for drill color has been studied.

研究了冶炼工艺对钢力学性能的影响，特别是对钻铤用钢冲击性能的影响。

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Mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established.

建立了新型开铁口机电动钻冲机构的力学模型，计算了它的固有频率和主振型。

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He made the extraordinarily daring decision to incorporate in this sculpture a real mechanical drill, mounted on a tripod.

WSJ: Masterpiece: Jacob Epstein's Prophesy

The Plan B would drill at an 85 degree angle into an area of mine shaft that is used as a mechanical workshop.

CNN: New drill arrives in Chile with great fanfare