“井筒”造句

屯留煤矿副井井筒表土段采用普通法施工,利用井外降水井疏干降水.
The auxiliary shaft topsoil adopted ordinary construction and drainages in hygrometric well.

煤矿立井井筒 非 采动破裂是一种新型工程地质灾害.
Non - mining fracture of shaft - lining is a new style of engineering geological hazard.

红南9-25井投产时, 井筒大量出砂,抽汲后砂埋油层.
When being put into production, well 9 - 25 produced quantity of sand.

• #井筒