The critical flow rates of sand grains with different size migrated from the sand-carrying pipe with different Angle of inclination were measured.
观察了颗粒在不同倾斜角度的井筒中的运移方式，测定了不同粒径的砂粒被携带出的临界流量，揭示了颗粒直径同流体流量关系变化规律。
Once you make a call, the washer will come to your house on a tricycle, carrying a water tank, a water pipe, a high-pressure spray gun, cleaning agents and towels.
只要打个电话，洗车工就骑着三轮车，载着水箱、水管、高压喷枪、清洗剂、毛巾等洗车工具应约而来。
Chea Visoth of the PPWSA recalls carrying water up to his flat from a roadside tank filled by a pipe illegally tapping the public system.
PPWSA的Chea Visoth回忆说当初供水到他的公寓的管道就是从路边公共供水系统的储水槽中引出来的。
The pipes are used for carrying sewage, water, oil or gas. Therefore, the weld seams produced during the manufacture of the pipe must be absolutely leak tight.
用于传输城市污水，水，油或者天然气的管道在焊接时必须保证严格的密封以防止泄露。
While operating, the operator carries the back-carrying machine frame and the motor on the back, and holds the sleeve pipe by hand to harvest crops, such as wheat, rice, etc.
工作时操作者把背负机架和发动机背在背上，手握套管收割稻麦等作物。
In pipe networks "growth ring" is an important factor to cause secondary pollution, so clearing the "growth rings" will help improve water quality and the capacity of pipes carrying water.
管网中的“生长环”是造成二次污染的重要原因，清除“生长环”有利于提高供水水质和管道通水能力。
In pipe networks "growth ring" is an important factor to cause secondary pollution, so clearing the "growth rings" will help improve water quality and the capacity of pipes carrying water.
管网中的“生长环”是造成二次污染的重要原因，清除“生长环”有利于提高供水水质和管道通水能力。
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