Freon 40B

用法例句

This thesis analyzes substantial reasons of the phenomenon of tunnel F4 faultage and water bursting and it also invesitages and proposes relative processing principals,specific measures,effective methods of constructions and technical requirements.

针对隧道F4断层涌水现象,深层次的分析原因,根据实际工程水文地质情况提出处治原则、具体措施及施工程序、工艺、要求,并进行了深入探讨。