1.a vertical tunnel in a mine with liftselevators inside that carry the workers up and down
1."The Daphnia system is an exquisite aquatic sensor, a potential high-tech and modern version of the mineshaft canary, " he said.
“水蚤系统是一种敏锐的水中传感器、一种潜在的高科技、一种现代版的矿区金丝雀，”他说。
2.Divers tried to enter the mineshaft but were deterred by the dark and complex network of tunnels.
潜水员试图进入井下，但由于光线差且巷道网络复杂，行动受阻。
3.Constructive technology of ten-thousand-ton products storehouse in winter in Tunliu Mineshaft Coal Factory
屯留矿井选煤厂万吨产品仓冬季施工工艺
4.Construction technology of mineshaft in freezing section of deep alluvial deposit
深厚冲击层井筒冻结段施工技术
5.The horizontal arrangement of floor type frictional sheave mineshaft bunton
落地式摩擦轮井筒罐道梁卧放布置
6.Air-cooling Technology in the Construction of Mineshaft Threatened by Heat
受热害威胁矿井井筒施工降温技术
7.Analysis of Air-flow Reversing Genesis in Mineshaft and Control Measures
井筒反风成因分析及控制