“sinking method”簡單造句，sinking method造句子

freezing shaft-sinking method

The freezing method became the preferred shaft sinking method when constructing in thick alluvium and unstable aquifer.

construction survey for conventional shaft sinking method

This paper analyses the piston effect problem in dellling shaft sinking method and its detriments. In the meantime, the approaches of solving the problem are proposed by the author.

conventionalshaft - sinking method

special shaft-sinking method