英语词汇“differential fill-up collar”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	differential fill-up collar
释义	differential fill-up collar differential fill-up collar [‚dif·ə′ren·chəl ′fil ‚əp ‚käl·ər] (petroleum engineering) A mechanism installed in the bottom of a well, when casing is set in a drill hole that automatically admits drilling fluids into the casing as required.
随便看	htspm htspn htsrc htss htsse indigen indigenate indigence indigences indigency indigene indigenes indigenisation indigenise indigenised indigenises indigenising indigenismo indigenity indigenization indigenize indigenized indigenizes indigenizing indigenous

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