释义 |
pumping concrcte 基本例句 泵送混凝土 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。 |