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压力盘
相关语句
  相似匹配句对
     Pressure Casting of Oval Platter
     鱼压力注浆成形
短句来源
     pressure;
     压力;
短句来源
     Change of intercalated discs of myocardium induced by pressure overload
     压力超负荷时心肌闰的改变
短句来源
     The Study on the Pressure
     论压力
短句来源
     Acme Disk
     异形
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  pressure pan
An alternative is to have pressure pan readings less than 1 Pa.
      


For drill holes riched in autoflowing ground water or pressure water of a large flow rate, conventional water shut-off methods often cease to be effective. It is suggested that a device by compressing the sea tangle or rubber balls may be used to achieve good results for this purpose. The device comprises a down-hole pressure disc. with the aid of the rotating drilling rod the disc moves downward to press the sea tangle or rubber balls and the expansion of which exert a radial force to compact tightly the hole...

For drill holes riched in autoflowing ground water or pressure water of a large flow rate, conventional water shut-off methods often cease to be effective. It is suggested that a device by compressing the sea tangle or rubber balls may be used to achieve good results for this purpose. The device comprises a down-hole pressure disc. with the aid of the rotating drilling rod the disc moves downward to press the sea tangle or rubber balls and the expansion of which exert a radial force to compact tightly the hole wall.

在地下水丰富的自流钻孔和大流量的承压水钻孔中,常规止水法往往失效。文中推荐的压缩海带止水器或压缩胶球止水器,可方便而有效地进行孔内止水。这两种止水器的原理,都是借助于钻杆回转,移动井下压力盘,压缩海带或胶球,使之产生径向扩张,挤紧孔壁。

 
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