The three "C"s of ROC - construct, compose, constrain are applied in that order.
ROC的三C——construct,compose,constrain是按照先后顺序加进来的。
S. P. C. company is specializes in research, development, production and sales of cement admixture.
公司专门从事各种水泥外加剂的研究开发、生产与销售。
S. P. C. company is specializes in research, development, production and sales of cement admixture.
公司专门从事各种水泥外加剂的研究开发、生产与销售。
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