self-drill screw 自钻钉
Self drill screw 自钻螺丝
wood screw drill 木麻花钻
screw-feed drill 螺旋钻机
left-hand screw drill pipe 左螺旋钻杆
screw-feed diamond drill 螺旋给料式金刚石钻机
screw extractor and drill kit 螺栓取出器套装工具
Screw drill 螺旋钻 ; 螺丝钻
screw drill rod 螺杆钻杆
Main products are drill and screw, which almost cover all the sizes and configurations.
主要产品是钻头和螺杆，我们提供几乎所有型号和结构。
In addition, some references and Suggestions on choosing design parameters of screw drill press concrete stake in complex foundation have been provided in this research.
另外，本次研究对复合地基中螺旋钻孔压灌混凝土桩的设计参数的选取提供了参考和建议。
The ground test replacement screw drill.
地面测试更换螺杆钻。
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