“variable speed operation”的概念、定义、翻译、参考文献-科学参考

单词	variable speed operation
释义	variable speed operation Encyclopedia 工学变速运行释 variable speed operation变速运行改变水泵的转速，使水泵的特性发生变化，从而使水泵的工况点发生变化的运行过程。
随便看	Social Democratic Party of Denmark Social Democratic Party, United States social democratic social policy theory social desirability social desirability bias social development social development trend analysis social deviance social dialogue social differentiation social dilemma social disorganization social disorganization theory social distancing social dominance orientation social drama social ecology social economic map social-economic-natural complex ecosystem social economic relations Social Economic System social ecosystem stability framework social education social educational institute social education department of museum

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