combined seed and fertilizer drill.
施肥播种机
Combined drill and milling cutter n.
复合钻铣床。
Combined taper pipe tap and core drill.
扩孔钻和锥管丝锥复合刀具
New combined electric drill applied in water control
新型组合电钻在防治水中的应用
Downthehole Hammer Combined with Auger Drill in the Pile of Rock Foundation
潜孔锤旋挖钻机组合在基岩桩施工中的应用
Design and Simulation Study of Combined Drill's Special Hydraulic Clamp System
组合钻床专用液压夹紧系统的设计与仿真研究
How to Judge Whether the Cement Is in Place for Liner Cementing by Combined Drill Pipe Plug in a Ultra Deep Well
复合钻杆胶塞解决超深井尾管固井碰压问题
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