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1·This is caused by the back surge of water to the pumping equipment.

它是由水流反向压力波冲击管道设备引起的。

2·LS series wet roots vacuum pump is a rough vacuum pumping equipment.

LS型直排大气湿式罗茨真空泵属粗真空获得设备。

3·Sand production of an oil well does great harm to the surface and downhole pumping equipment.

油井出砂是石油开采过程中遇到的重要问题之一。

4·The electricity of coal mine main pumping equipment consuming constilute important statute, its economic operation has important effects to mine production costs.

矿井排水设备消耗的电能占矿井总耗能量的比重很大，其运行经济性对矿井生产成本具有重要影响。

5·Further improvements in drainage canals and pumping equipment in the older sections of the city were also made. These operated well until they were overwhelmed by Hurricane Katrina in 2005.

城市其他老城区的排水渠道和排水设备有有了进一步的提高，这些设施直到被2005年卡崔娜飓风淹没之前，一直运转良好。

6·Gas-separation equipment is also used in downhole applications, such as the protection of pumping equipment against gas lock by separating and redirecting free gas at the pump suction or inlet.

气体分离设备也在井下使用，如保护抽油设备使得不会在泵的吸入处或入口处由于游离气的分离和改变方向而发生气锁。

7·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。

8·At the same time equipment can be operated while pumping vacuum.

同时设备可以边运转边抽真空。

9·If the water rises to about 40 or 50 cm, we will immediately assemble our equipment, and start pumping water from the low-lying parts under the viaduct.

如果水位上升40至50厘米，我们将马上集中我们的设备，开始在高架桥下的低洼地区进行排水。

10·Used in pumping systems to protect equipment from damaging pressure surges or waves caused by rapid changes of flow within the pipeline.

用在泵系统上，保护设备不会受到由于管线内流量变化而产生的压力波动或起伏的破坏。