词汇	presheaf structure
释义	presheaf structure 数预层结构
随便看	commonwealth telecommunications organization Commonwealth, the Commonwealth:The people of a nation or state commonwealth trade union council commonwealth trans atlantic cable Commonwealth Unit Trust Fund commonweal value common weapon Common Weapons Control System Common Wedgelet Fern common wedgelet fern herb common wedgelet fern leaf common weights Common Weights And Measures common weld pool common welfare Common Welfare Funds common well common wheat common wheats common whip-back pruning common whipping common white dogwood common white dogwoods Common Whiteface