螺杆钻具 meaning in Chinese

helicoid hydraulic motor

Analysis of factors that influence working life of screw drill
影响螺杆钻具工作寿命的使用因素分析
Mechanical behavior study on positive - displacement motor ' s flexible shaft
螺杆钻具挠性轴力学模型建立及主控因素敏感性分析
Wdtf is the manufacturing base for geotechnical drilling tools of cge . its main products are drilling tools for geological and engineering drilling , including wireline drilling tools , pneumatic downhole hammers , downhole drilling motors , synthetic diamond and its products , tungsten carbide and its products , various drilling pipes and tools . all products are reliable in quality , stable in performance and reasonable in price
无锡钻探工具厂为中装集团勘探和工程施工用钻具的生产基地，主要生产各种地质勘探钻进用钻具和工程施工用钻具，包括以绳索取芯工具系列风动潜孔冲击器系列螺杆钻具系列为代表的钻探工具人造金刚石及其制品各种牌号的型号的硬质合金及其制品各种钎杆钎具等。