“guide ring”的概念、定义、翻译、参考文献-科学参考

单词	guide ring
释义	guide ring [`gīd ´riŋ] ^{MINING ENGINEERING} A longitudinally grooved, annular ring made almost full borehole size, which is fitted to an extension coupling between the core barrel and the first drill rod.
随便看	flanged pipe flange isolator flange union flangeway flanging flank flank angle flank hole flank observation flank wear flannel flannelette flap flap attenuator flaperon flap gate flap hinge flapping flap trap flap valve flare flareback flare chute flare factor flare gas

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