About Wang Haibo
About 中国建筑第二工程局有限公司西南分公司,100010,北京
About Zhang Hongyuan
About 中国建筑第二工程局有限公司西南分公司,100010,北京
About Chen Chunhong
About 中国建筑第二工程局有限公司西南分公司,100010,北京
About Ma Chao
About 中国建筑第二工程局有限公司西南分公司,100010,北京
About Jianzhu Jishu
About covering
About reinforcing steel
About timbering(mine)
About borehole
About geology(geological feature)
About tunnelling work
About Drilling in general
About Muck disposal,timbering,lining
About Mechanical properties of rocks
About Junneling engineering in general
About トンネル
About 棚
About 施工