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。
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