把拟凹推广到锥拟凹，证明了锥弱有效解集仍是连通的。
The quasiconcave was extended to the cone-quasiconcave, and the cone weak efficient solution set was still connected.
在此基础上，得到了向量目标函数既是似凸又是拟凸的多目标最优化问题的G-恰当有效解集是连通的结论。
On the conditions that vector objective function is like-convex and quasi-convex, we obtain the connectedness of G-proper efficient solution set of the multiobjective optimization problem.
裂缝不仅可以使孤立的孔洞得以连通，发育成有效的储集空间，大大提高基质渗透率，更是油气的主要运移通道。
Not only the fractures can connect the separated cavity to grow the effective reservoir space and improve the permeability of matrix, but also is the main path of petroleum migration.
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