air-lift pump
柯林斯词典
1. N a pump that pumps liquid by injecting air into the lower end of an open pipe immersed in the liquid: often used in boreholes 气压抽水泵
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1. N a pump that pumps liquid by injecting air into the lower end of an open pipe immersed in the liquid: often used in boreholes 气压抽水泵