Control function not only can be controlled automatically by PC, but also manual operated with panel hand.
以上控制既可以通过计算机自动控制，又可以在面板上手动控制。
There are different kinds of valves ranging from simple hand operated valve to fully automatic valve for control of gas-air mixture.
有很多从简单的手阀等各种阀到全自动控制天然气混空气阀。
There are different kinds of valves ranging from simple hand operated valve to fully automatic valve for control of gas-air mixture.
有很多从简单的手阀等各种阀到全自动控制天然气混空气阀。
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