“pressure ring”的概念、定义、翻译、参考文献-科学参考

单词	pressure ring
释义	pressure ring [`presh·ǝr ´riŋ] ^{MINING ENGINEERING} A ring about a large excavated area, evidenced by distortion of the openings near the main excavation.
随便看	quaternary ammonium salt quaternary carbon atom quaternary phase equilibria quaternary signaling quaternary system quaternion quatrefoil quay quebracho quebracho bark queen queen closer queen post queenslandite Queensland tick typhus queen's metal Queenston shale queenstownite quellung reaction quench aging quench annealing quench bath quenched spark gap quenched water quench frequency

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