pumping pump up
英
美
- 泵送
双语例句
- The upstream pumping mechanical seal was used as shaft sealing of vacuum plants.
研究了上游泵送机械密封在真空装备轴封中的应用。 - 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。
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