English translation for "顶板下的瓦斯层"

roof layer firedamp

Related Translations:

顶板阶梯:  roof step

顶板撑:  crown stay

外顶板:  roof sheet

顶板裂缝:  roof fissure

平巷顶板:  roof of drift

货架顶板:  deck board

岩层顶板:  top of bed

人工顶板:  artificial roof

弱顶板:  poor roof

稳定顶板:  firm top

Similar Words：

"顶板突然崩落" English translation, "顶板土壤" English translation, "顶板下沉" English translation, "顶板下沉测量锚杆" English translation, "顶板下垂部分" English translation, "顶板下的沼气层" English translation, "顶板线道" English translation, "顶板压力" English translation, "顶板压力拱" English translation, "顶板压落" English translation