短語詞組短語closed d interval integral 閉區(qū)間積分closed nested interval 閉區(qū)間套closed contractive interval sheath 閉縮區(qū)間套closed open interval equivalence classes 閉區(qū)間等價類H half closed interval 半閉區(qū)間ordered closed interval sheath 序閉區(qū)間套bounded closed interval 有界閉區(qū)域closed interval with bound 有界閉區(qū)域semi -closed interval [數(shù)]半閉區(qū)間 返回 closed interval