If you smell gas or see a broken line, shut off the main valve from the outside.

如果闻到煤气味儿，或看到管道破裂，要关掉从外面进屋煤气管道的主阀门。

youdao

And the a gas liquid coexistent line.

这是气体——液体共存曲线。

youdao

Then there was a gas, solid, call it coexistence line.

这是所谓的固体--气体共存曲线。

youdao

Then there was a gas, solid, call it coexistence line.

这是所谓的固体--气体共存曲线。

youdao