Evidently this one was employed to mine the English Channel and harbor approaches.

这型潜艇建造目的是针对英吉利海峡以及港口布雷。

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Dams, mine tunnel, shaft, tunnel, River Cross Harbor Tunnel, subway excavation of underground works such as the use of anti-seepage curtain grouting;

水坝、矿山巷道、竖井、隧洞、江河海底隧道、地铁等地下工程开挖时采用注浆防渗帷幕；

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Our products are widely used in highway, railway, tunnel, bridge, airport, Power Plant, Water conservancy, mine, harbor, refuse landfill and other building projects.

产品广泛应用于公路、铁路、隧道、桥梁、飞机场、电厂、水利、矿山、港口、垃圾填埋厂、建筑及其它土建工程。

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