I have often found this to be necessary at the beginning of projects or working out which enhancements deserve further investigation and which should be abandoned straight away.
我发现通常这种方法在项目初期是必要的，对找出那些增强点值得继续调研哪些应该立刻放弃也是必要的。
Successful practice shows the application of such backfill material to abandoned roadway is a good solution to ensure the working face pass through abandoned roadway quickly, sa...
实践证明，采用高水速凝材料充填空巷是综放工作面快速、安全、经济地推过空巷的有效途径。
In addition, the pollution of abandoned PVC adhesive tapes which are torn down to production environment is avoided, and working capacity for cleaning is reduced.
另外，避免了撕扯下来的废pvc胶带对生产环境的污染，减少了清理工作量。
In addition, the pollution of abandoned PVC adhesive tapes which are torn down to production environment is avoided, and working capacity for cleaning is reduced.
另外，避免了撕扯下来的废pvc胶带对生产环境的污染，减少了清理工作量。
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