Start up the circulating pump.

启动循环泵。

A re-circulating pump is used to continually move the polymer.

重新循环泵用来不断搅拌聚合物。

Research of Energy-Saving and Economic Operating of the Water Circulating Pump;

因此循环气流以极高的能量离开气泵。

The basic principle of distributed circulating pump heat-supply system is introduced.

介绍了分布式循环泵供热系统的基本原理。

And a by-pass pipe with check valve is set between the inlet and outlet of circulating pump.

在循环泵进出口之间设置带止回阀的旁通管。