By using fixed point theory, in this paper we study the existence of triple positive solutions for a class of second-order differential equations with integral boundary conditions.
运用不动点定理，研究了一类带积分边界条件的二阶微分方程三个正解的存在性。
Triple junction is the intersection point among three plate boundaries. The boundary could be tensional, compressional or shear fault.
三条板块边界常相交于一点，这一个交点就叫做板块三联接合点（简称三联点，或称三节点）。
Triple junction is the intersection point among three plate boundaries. The boundary could be tensional, compressional or shear fault.
三条板块边界常相交于一点，这一个交点就叫做板块三联接合点（简称三联点，或称三节点）。
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