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	indian blackwood indian blanket indian blood group system indian board of alternative medicines indian board of interior appeals indian board of toxicologic pathology indian bread heterotopic transplantation heterotopism heterotopotaxy heterotopous heterotopy heterotoxin heterotrait-heteromethods heterotrait-monomethods heterotransplant heterotransplantation heterotransplants heterotricha heterotrichales heterotrichida heterotrichina heterotrichosis heterotrichous heterotrimeric gtp-binding proteins

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