比例泵 meaning in Chinese

dosing pump
metering pump
proportional pump
proportioning pump
roportioning pump

The valve ports of the basic material pump , the curative agent pump and proportioning pump all adopt the special alloy with zero leakage
涂胶机基料泵，固化剂泵及比例泵的高压阀口，均采用零泄特殊合金研磨制造。
The valve ports of the basic material pump , the curative agent pump and proportioning pump all adopt the special alloy - with zero ieakage
该涂胶机的基料泵、固化泵及比例泵的高压阀口均采用零汇露特殊合金研磨制造。