The medium is prepared in a special tank and then is pumped into circulate tank by a feeding pump in which the medium is heated to working temperature.
钝化介质在专门的槽中准备，然后用加料泵泵入循环槽，在槽中加热至工作温度。
The oil pump continues to circulate the oil as long as the engine is running.
只要发动机在运转，机油泵会持续使机油循环。
The pump design shall be such to have the desired capacity and shall be capable to circulate the chemical at velocity required for cleaning of piping system.
泵的设计应满足排量要求，并能够按照清洗管线系统所要求的速度来循环化学品。
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