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单词
deep-well pump, drowned pump
释义
deep-well pump, drowned pump
深井泵; 用于井田疏干,沉入钻孔中排水的机械。包括“长轴深井泵(deep-well pump with line-shaft)”和“潜水深井泵(submersible deep-well pump)”。
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更新时间:2025/11/25 7:31:42