要确保阀门排泄的水直接排放到一个畅通的排水口，并保证不会冻结。

Make sure the discharge of this valve is directed to an open drain and protected from freezing.

youdao

要确保阀门排泄的水直接排放到一个畅通的排水口，并保证不会冻结。

Make sure the discharge of this valve is directed to an open drain and protected from freezing.

youdao