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发表于 2018-1-8 19:30
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本帖最后由 confused-maoan 于 2018-1-8 19:33 编辑
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! f$ l9 V* Z7 _* f# e2 G" T6 e我的理解是 :当移除closure后,开孔面积 肯定是要大于passage,而这段文字说不能大于passage5 ]0 r2 a/ U# o
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