soft rock drift的用法和樣例：
例句
- The application of repairing soft rock-tunnel by pregrouting is introduced.
介紹了注漿技術(shù)在軟巖巷道修復施工中的應用。 - The polypropylene fibre concrete is the new kind of concrete flexible shotcrete layer forms in the soft rock tunnel sup-porting engineering.
摘要聚丙烯纖維混凝土柔性噴層是軟巖巷道支護中一種新型的噴層形式。
