In addition, high precision valve plates allow increased self-priming speed and low noise operation.

此外，精度高，阀板可以增加自吸速度和低噪音的运作。

youdao

In addition, high precision valve plates allow increased self-priming speed and low noise operation.

此外，精度高，阀板可以增加自吸速度和低噪音的运作。

youdao