| 释义 |
room and pillar短语¹⁸⁰⁰⁹⁸⁺¹
基本例句
房柱式采煤工作面
Room and coal pillar are the fundamental structure of room and pillar method. The design of Room and coal pillar is the core in the room and pillar method.
煤房煤柱是房柱式采煤法的基本结构，同时煤房煤柱设计也就是房柱式采煤法岩层控制的核心。 cnki
Lots of coal mines in neimenggu use the system of room and pillar and exploits only rooms but not pillars.
内蒙古地区很多煤炭生产基地多利用房式开采体系，只采煤房，不采煤柱。 dictall |