At the base of a deep shaft six metres below the modern streets a wooden structure was revealed.
在现代街道下方六米深的竖井底部,有一座木质结构的建筑露出来了。
As the firemen dug away at the aperture they had opened, they found that the corridor had become a 15-foot deep shaft.
消防员们继续扩大他们挖开的孔,最后他们找到了走廊,并在那里打开了一个大约十五英尺深的竖井。
The prevention of freezing pipe breaks in deep shaft freezing has become a key technique in mine construction in China.
防止冻结管断裂在国内深井冻结中已成为关键技术。
应用推荐