About Li Jingguo
About 中交一公局第一工程有限公司,北京102205
About Yang Kui
About 中交一公局第一工程有限公司,北京102205
About Xiandai Suidao Jishu
About hydraulic pressure
About rock
About rock mass
About cannon
About sandy
About geology (geological feature)
About work environment
About tunneling
About water jet
About Tunneling work
About Junneling engineering in general
About 世代
About エネルギー
About 水圧
About 爆破
About トンネル
About 応用