国产自慰在线资源|国产精品亚洲中文欧美|亚洲欧美日韩精品专区|在线免费国产视频一区二区|免费一级A级高清毛片人妻|亚洲欧美在线制服丝袜国产|伊人久久大杳蕉夜夜揉夜夜爽|最新哺乳亚洲AV日韩AV二区

400-700-9998
歐美大地 Past Events
The 12th National Slope Engineering Technology Conference
發(fā)布時(shí)間：2020-06-08 瀏覽次數(shù)：149 來源：歐美大地
Event Date: August 5-8, 2020
Event location: Guiyang
 
Slope engineering is an important field of geotechnical engineering, which is related to the safety of and significance for engineering projects. Since the first meeting of slope engineering technology conference in 2009, it has played an active role in promoting slope protection and new technologies for disaster management through technical exchanges
 
The Earth Product China Limited has participated in the industry conference for 11 consecutive years, and will continue to appear this year.