The circular tube grouting test was made by the established model of grouting slurry tube in rock mass and using piston type grouting pump commonly used in grouting engineering.
通过建立岩体中灌浆管状模型，利用灌浆施工中常用的活塞式灌浆泵，进行了圆管模型灌水(浆)试验。
2
The water pump and fan's using is driving flux circular flow, and the need of heating and cooling.
在系统中水泵、风机的作用是驱动流体的循环，以满足民用和工业中的供热、供冷的需求。
3
The pump cover is provided with a cooling wash fluid circular loop inside. The pump cover is provided with a distributing ring.