先关闭烧嘴阀门，再及时拉开放散阀。

Turn off burner valve, then open valve.

youdao

在工业生产过程中，存在着大量具有一定温度品质的热能被放散。

In the industry production process, a lot of fine quality heat energy is wasted.

youdao

在工业生产过程中，存在着大量具有一定温度品质的热能被放散。

In the industry production process, a lot of fine quality heat energy is wasted.

youdao