1·Now we are offering you 50 metric tons of premixed concrete.
我们现在向你们报50公吨预拌混凝土。
2·There are a lot of factors which influence premixed concrete quality both in technique and management.
影响预拌混凝土质量的因素有很多，既有技术上的因素，也有管理上的因素。
3·Based on the construction practice, the article analyzes and concludes the factors which influence the premixed concrete strength to call the attention of the different building members.
文章在工程实践的基础上，对影响混凝土强度的诸多因素进行了分析与归纳，以引起预拌混凝土和工程建设各方注意。
4·Good effect of cutting brittle materials such as concrete by premixed abrasive water jet shows that this clod cutting technology has a unique advantage in the schoolwork under urgent conditions.
前混合磨料水射流对混凝土等建筑脆性材料具有良好的切割效果，在易燃易爆等应急场合进行切割作业具有独特优势。