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国家标准化管理委员会以《关于下达2009年第二批国家标准制修订计划的通知》(国标委综合[2009]93号)文件,下达了2009年第二批国家标准制修订计划,《预拌混凝土》(原
The State Standardization Management Committee issued the second installment of the revision of the national standard in 2009 on the basis of the “Notice on Issuance of the Second Batch of National Standard Revision Plans in 2009” (GB Standard [2009] No. 93) "(original