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泵后加砂砾石充填
meaning in English
gravel injection down-stream of the pump
Related Words
砂砾材料
砂砾土
砂砾堤
火山灰砂砾
砂砾栽培
砂砾保护层
砂砾路
砂砾草
冲积砂砾
砂砾锥
泵和液压马达间的液流阀
泵和蒸汽抽取隔离
泵后加砂注入
泵后加砂注入系统
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