Install, test, maintain and repair water well pumps, piping systems and equipment and perform pumping tests to assess well performance.
安装,测试,维护和修复水井泵,管道系统和设备,并进行抽水试验,评估水井性能。
However, in the conventional vacuum pumping tests, fine particles did not lost and there was clogging without arching structure layer.
而常规真空抽水方法中不存在细颗粒流失,没有形成拱架结构,造成了淤堵。
In this paper, the model tests of the wind-powered water -pumping system was conducted and the results of the tests prove that the principle of the system is correct.
本文报道了这种新型风力提水系统的模型实验结果,对提水过程进行了初步理论分析,并指出了进一步的研究方向。
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