“heaving plug”的概念、定义、翻译、参考文献-科学参考

单词	heaving plug
释义	heaving plug [`hēv·iŋ ´plǝg] ^{PETROLEUM ENGINEERING} A plug at the bottom of an oil well which stops unconsolidated sand from mixing with the oil.
随便看	type C2 carbonaceous chondrite type C3 carbonaceous chondrite type drum typeface type gage type I assembly type I error type II assembly Type II Cepheids type II error type III assembly type II superconductor type II supernova type I of Cori type I superconductor type I supernova type locality type-M carcinotron type metal type-O carcinotron type section type size typewriter typewriter terminal type-α leader

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