例句 /

According to the need for design and construction of prestressed reinforced concrete of Jingzhou Yangtze River highway bridge, C60 conctrete was mixed with superfine admixture and high workability agent, then it was speeding up construction progress for t

According to the need for design and construction of prestressed reinforced concrete of Jingzhou Yangtze River highway bridge, C60 conctrete was mixed with superfine admixture and high workability agent, then it was speeding up construction progress for t

摘要根据荆州长江公路大桥预应力混凝土结构设计、施工要求,采用掺入超细掺和料和高能外加剂配制C60混凝土,长距离、大高度泵送混凝土,为大桥建设加快进度,确保质量起到了作用。