英语词汇working substance怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	working substance
释义	working substancen.（名词） A substance, such as a fluid, used to effect a thermodynamic or other change in a system.资用物质：一种物质，比如像流体，用于在一个系统中产生热力变化或其它的变化
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