瓦斯是发生在诸如煤矿、地下交通枢纽等领域的重大灾害的根源之一。

Gas is one of the sources which are the major disaster such as coal mine and underground transport hub.

youdao

瓦斯是发生在诸如煤矿、地下交通枢纽等领域的重大灾害的根源之一。

Gas is one of the sources which are the major disaster such as coal mine and underground transport hub.

youdao