界: 名词1.(相交的地方; 划分的界限) boundary 短语和例子国界 the boundary of a country; national boundary; 山西和陕西以黄河为界。 the boundary between shanxi and shaanxi is the huanghe river.2.(一定的范围) scope; extent 短语和例子外界 e
The results show that the class of problems has at least one solution or positive solution provided the " maximal height " of nonlinear term is appropriate on a bounded set of its domain 结论表明，只要非线性项在其定义域的某个有界集上的“最大高度”是适当的，那么这类问题至少存在一个解或者正解。
