基本解释[經濟學]變速泵英汉例句雙語例句Finally, the optimization result of water source heat pump set under the variant working conditions can be received.最終獲得水源熱泵機組的變工況優化設計結果。variant pump更多例句词组短语短語variant t pump 變速泵speed -variable pump variant pump 變速泵variant pump更多词组专业释义經濟學變速泵