closuren.关闭；关口；讨论终结；终结closure earthwork闭气土方closure operation闭包运算,合龙作业closure dimension封模尺寸closure condition闭合条件closure of border关闭边界closure of school学校停课; 封校Closure by staple缝合器闭合术Closure by suture缝术闭合closure tolerance闭合公差,封闭公差closure of waters封闭水域