| 释义 |
tunnel excavation短语¹⁸⁰⁰⁹⁸⁺¹
基本例句
隧道开挖
The design, construction and effect of the explosion for tunnel excavation on the diversion tunnel project of Tangpu Reservoir in Zhejiang province were introduced.
简要介绍了浙江省汤浦水库输水隧洞工程洞挖爆破的设计、施工及实施效果。 cnki
Because of the weak borehole sealing and inadequate use of the initial free face, the higher investment and unsatisfactory blasting effect still exist in the mine tunnel excavation blasting.
由于炮孔堵塞不牢和初始自由面利用不充分，井下平巷的掘进开挖爆破仍存在投入大、爆破结果欠理想等问题。 cnki |