少妇午夜福利一区二区,免费黄色电影在线观看,国产成人精品午夜二三区,国产福利精品,车上疯狂做爰HD韩国,日本AAAA特级毛片,天天干夜夜曰 ,玩弄人妻少妇老师美妇厨房,男人女人做爰的电影

   Through independent innovation, the four key technologies and 30 sub core technologies, which are the core technology and the large volume prestressed concrete structure, are accumulated and formed. The construction technology of long and large volume prestressed concrete structures, the construction technology of large span and complex steel structures, the crack prevention technology of concrete structures, the foundation treatment and deep foundation pit engineering in Linhai. These key technologies have been successfully applied in the 2008 Qingdao International Sailing Center, the Qingdao Grand Theatre, the international terminal and the International Convention and Exhibition Center, and have achieved remarkable economic and social benefits.

Comprehensive construction technology of ultra long and large volume prestressed concrete structures

Construction technology of large span and complex steel structure

Anti cracking and anti seepage technology of concrete structures

Foundation treatment and deep foundation pit engineering technology under complex geological conditions in Linhai