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  1. Oxford American Dictionary

    angle of repose

    • IPA[ˈaNGɡəl əv]
    • n.
      the steepest angle at which a sloping surface formed of a particular loose material is stable

    • noun: angle of repose, plural noun: angles of repose

    • 釋義

    名詞

    • 1. the steepest angle at which a sloping surface formed of a particular loose material is stable the angle of repose will vary locally according to the mechanics of shape and strength