英语词汇proper operation是什么意思，proper operation的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	proper operation
释义	DEFINITIVE EXAMPLES 权威例句〔upkeep〕Maintenance in proper operation, condition, and repair.保养：为保证正常的运行，状况，和修缮状况所做的保养美国传统
随便看	testing campaign testing certificate testing company testing constant testing department testing device testing door testing envelope testing environment testing expenses testing facility testing fee testing fixture testing for bug testing ground testing ground testing ground testing homogeneity testing instrument testing jig testing laboratory testing level testing machine testing machine of mechanical strength testing maintainability

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