tO decrease bacteria on t... ... ②当砼达到设计及规范要求的张拉强度后按设计规定先后次序、分批、对称进行张拉，严格按照张拉程序进行。张拉后按规范要求对管道进行压浆。 » ② When the tensile strength of concrete design and specification back order as required by design, in batches, symmetric stretching, in strict accordance with tensioning procedure. After tension according to the specification requirements for pipe-jacking. 网络与教育技术中心 » Network with educational technology center 你要在来一点儿苹果汁吗？ » You want to come a little apple juice? ...

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