1) light-duty roof caving coal hydraulic support
轻型放顶煤液压支架
1.
The design of light-duty roof caving coal hydraulic support equipped with flat tramcar;
轻型放顶煤液压支架配套平板车设计
2) light supports caving mining
轻型支架放顶煤
4) light roof caving support
放顶煤轻型支架
6) light support fully-mechanized caving mining
轻型支架放顶煤综采
补充资料:综采放顶煤
综采放顶煤:厚煤层煤炭开采技术之一。把原来分层开采的煤炭,一次采完。方法是,在煤层底部按传统方法开采,使上面的煤炭在矿压的作用下,自动落下来。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条