水泵和管道在设计上是应该充满水的。
水泵和管道在设计上是应该充满水的。弗里德兰德先生说，但是它们发生了泄漏，变成了水气混合的状况。
The pump and piping are designed to be kept full of water. But they tend to leak and develop alternating pockets of air and water, Mr. Friedlander said.
根据管道水力特性曲线与水泵的性能曲线，运用理论分析的方法，对影响末端定压差控制方式的因素和该控制方案的利弊进行了分析。
Factors affecting constant pressure difference control method and advantages and disadvantages of the control plan are analyzed theoretically through pipe system head curve and pump performance curve.
降低起动和停车过程中对水泵、管道等设备的冲击，从而延长水泵系统的使用寿命，减少维护量。
Soft starter reduce the shock that is happened in the process start and stop to the equipment such as pump and pipeline etc so as to extend convey system service life and decrease maintenance.
主要用于水泵叶轮、管道相贯线及复杂图形和各种金属材料的焊接，配合相应控制系统能自动完成三维激光焊接。
Mainly used to pump impeller, pipe line and complex graphics and all kinds of metal materials, the welding corresponding control system can automatically accomplish 3d laser welding.
为应对这样的雨涝，我们的城市投入巨资，建造了超大规模的排水管道和排水泵站，恨不得使每一滴雨水瞬间消失。
To deal with the volume of raining and flooding, our cities make huge investments to build large drainage pipelines and pumping stations, hoping to drain every drop of rain in the blink of an eye.
降低起动和停车过程中对水泵、管道等设备的冲击，从而延长水泵系统的使用寿命，减少维护量。
Soft starter reduce the shock that is happened in the process start and stop to the draught fan equipment so as to extend convey system service life and decrease maintenance.
降低起动和停车过程中对水泵、管道等设备的冲击，从而延长水泵系统的使用寿命，减少维护量。
Soft starter reduce the shock that is happened in the process start and stop to the draught fan equipment so as to extend convey system service life and decrease maintenance.
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