常见例句双语例句In this paper, the ψ- ordered contractive operator is introduced and the existence of fixed points is established in a cone metric space.本文首先在锥度量空间中引入了ψ序压缩算子这一概念，然后证明了几个ψ-序压缩算子的不动点存在性定理。 返回 cone metric space