英语词汇“To attain proficiency”的翻译、意思、用法、释义-英汉汉英双解词典

单词	To attain proficiency
释义	To attain proficiency 臻于娴熟
随便看	surge control valve surge cooling oil gallery surge counter surge counter type sc12 surge crest ammeter surge-crest ammeter surge current surge, current surge current generation surge current of electrode surge current tester surge curve surged surge damper surge damping circuit surge damping valve surge defence surge discharge surge diverter surge down surge drum surged up surge effect surge electrode current surgee limit