“traveling valve”的概念、定义、翻译、参考文献-科学参考

单词	traveling valve
释义	traveling valve [`trav·ǝl·iŋ `valv] ^{PETROLEUM ENGINEERING} A sucker-rod-pump (oil well) discharge valve that moves with the plunger of a stationary-barrel-type pump, and with the barrel of a traveling-barrel-type pump; contrasted with a standing valve.
随便看	oversize rod overspeed governor overspin oversquare engine overstability overstabilization oversteepening oversteer overstep overstressed area overstressing over-the-horizon propagation over-the-horizon radar overthrow distortion overthrust overthrust black overthrust fault overthrust nappe overthrust sheet overthrust slice overtide overtone overtone band overtone crystal overtopping

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