“four-piece set”的概念、定义、翻译、参考文献-科学参考

单词	four-piece set
释义	four-piece set [¦fȯr ¦pēs `set] ^{MINING ENGINEERING} Squared timber frame used in underground driving to give all-around support to weak ground.
随便看	long-life items long-line current long-line effect long-lines engineering long-nose pliers long oil long-period tide long-period variable long-persistence screen long-pillar work long-playing record long primer long radius long-range chart long-range forecast long-range materiel requirements long-range navigation zone long-range order long residuum long run frequency Long's coefficient longshore bar longshore current longshore drift longshore trough

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