He slipped end-over-end machine in the construction process, each class make concrete samples in two groups, making the second days after release, and sent to a laboratory standard site.
涵管机在施工过程中，每工作班制作混凝土试件2组，在制作完后第二天进行脱模，并送至工地试验室进行标养。
He slipped end-over-end machine in the construction process, each class make concrete samples in two groups, making the second days after release, and sent to a laboratory standard site.
涵管机在施工过程中，每工作班制作混凝土试件2组，在制作完后第二天进行脱模，并送至工地试验室进行标养。
应用推荐