This paper analyses the advantages and the apply condition of the air heating stove used for the mine shaft cold prevention.

分析了热风炉用于井筒防冻的优点及适用范围。

youdao

This paper analyses the advantages and the apply condition of the air heating stove used for the mine shaft cold prevention.

分析了热风炉用于井筒防冻的优点及适用范围。

youdao