Screw pump is a new type of liquid delivery of machinery, with a simple structure, safe and reliable use of easy maintenance, a continuous uniform fluid, pressure, stability and so on.
螺杆泵是一种新型的输送液体的机械，具有结构简单、工作安全可靠，使用维修方便、出液连续均匀、压力稳定等优点。
Application shows that the new rig is characterized by simple and compact structure, safe and reliable operation, convenient transportation and wide use.
出口和现场应用表明，该型钻机不仅具有结构简单、安全可靠和设计紧凑等优点，而且具有移运方便和使用范围广等不可比拟的优势。
The construction has proved that the supporting structure is safe and reliable , the construction exactitude is very high, and the structure is succinct and convenient for construction.
实际施工证明该模板和支顶体系是安全可靠的，而且它的施工精度高、结构简洁、施工便利。
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