“井筒”的拼音？

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 ge...

“井筒”的英语可以翻译为：[矿] rockshaft，pitshaft，wellhole，shaft ...