pumping concrete的用法和样例：
例句
- This paper analyzes the characteristics of large pump concrete and the cause of Concrete crack, provides corresponding prevention measures.
摘要文章分析泵送混凝土特点及大体积混凝土裂缝产生的原因，提出防治措施。 - At present, excessive pumping concrete, pumping concrete in order to ensure the availability of pumps, pumping concrete, often adding an appropriate amount of air-entraining agent.
目前泵送混凝土用量过大，为了保证泵送混凝土的可泵性，往往在泵送混凝土中加入适量的引气剂。
