underground coal mining district的意思|示意

美 / / 英 / /

井下采煤区

underground coal mining district的网络常见释义

井下采煤区 underground coal gasification ==> 煤地下气化,煤炭地下气化 underground coal mining district ==> 井下采煤区,井下采煤区 underground collector ==> 地下接触轨集电器 ..

underground coal mining district相关例句

This paper introduces the design method for a kind of the explosion-division intelligent electromagnetic starter specially used in the fans of the underground coal mining district.

介绍了一种煤矿井下对旋式风机专用隔爆型电磁启动器的设计方法。