The air screw drill tool was power equipment which was designed for air drilling.
空气螺杆钻具是专为空气钻井而设计的动力装置。
Based on this, we may make improvement to prolong the life of screw drill tool and screw pump.
这一观点，有可能使螺杆钻具与螺杆泵的寿命短的现状有所改善。
The operation performance of PDC bits with screw drill tool appplied now in oilfield were analyzed comprehensively.
用螺杆钻具组合实施煤矿工程孔定向钻进时，钻头侧向力是其主要力学特性。
The purpose for the later is to improve the existing rotor screw drill for high efficiency. Subject heading: horizontal drilling screw drill tool control bending sub st...
研制后者的目的，在于改善现有中空转子螺杆钻具的软特性和低效率。
Blade tools: eyebolt, turning tool, Allen key, screw tap, milling cutter, drill bits, etc.
刀刃工具类：埃令螺丝(吊环)、圆车刀、六角匙、丝攻、铣刀、钻咀等。
Application: Main shaft of machine tool, auto steering structure, main shaft of lathe, grinder, milling machine, drill press, water power dynamotor, tower crane, screw shaft and so on.
应用领域：车床，磨床，轧机，钻压机，水力发电机，塔吊，螺杆轴的主轴，汽车转向装置等。
Application: Main shaft of machine tool, auto steering structure, main shaft of lathe, grinder, milling machine, drill press, water power dynamotor, tower crane, screw shaft and so on.
应用领域：车床，磨床，轧机，钻压机，水力发电机，塔吊，螺杆轴的主轴，汽车转向装置等。
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