Valves may also be automatic, driven by changes in pressure, temperature, or flow.

阀门也可能是自动的，在推动的变化由压力，温度或流量。

youdao

Valves may also be automatic, driven by changes in pressure, temperature, or flow.

阀门也可能是自动的，在推动的变化由压力，温度或流量。

youdao