英语词汇“bump-down”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	bump-down
释义	bump-down bump-down [′bəmp‚dau̇n] (petroleum engineering) In an oil well pumping operation, the pump's hitting the bottom in the downstroke because the rod between the pumping jack and the pump seat is too long.
随便看	tapered suture needle tapered tenon tapered thread tapered transmission line tapered tread tapered valley tapered waveguide tapered wheel tapered wing tape rental library taperer taper feeler gauge taper file taper gage tapering tapering arch taperingly tapering off tapering-off taper-in-thickness ratio taper key taperness taper off taper per foot taper pin

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