sand dump valve 排砂阀
forced sand dump technology 强制排砂技术
To deal with the sand dump difficulty in sand problem wells,a new type of rotary sand pump was developed.
为解决漏失严重出砂井排砂难的问题,研制了新型旋转式抽砂泵。
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Half a dozen dump trucks were beetling around with loads of supplemental sand.
五六台自卸车装着填充用的沙子中那里忙碌。
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Don't dump that sand in the middle of the path.
不要把沙石乱倒在走道中央。
Look at that dog taking a dump on the sand!
你看那只狗在沙子里大便！
At the enormous oil sand strip mine, shovel cranes drop 100-ton loads of sand into 400-ton dump trucks.
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