止回阀与安全阀在齿轮泵的输出管路上最好安装一个止回阀。

Check valve and relief valve on the output of the gear pump tube had better install a check valve.

youdao

止回阀与安全阀在齿轮泵的输出管路上最好安装一个止回阀。

Check valve and relief valve on the output of the gear pump tube had better install a check valve.

youdao