1.Compaction and cementation are the main destructive digenesis, while dissolution is the main constructive digenesis.
压实与胶结作用是主要的破坏性成岩作用，而溶蚀作用则是主要的建设性成岩作用。
2.Herein, a case of mixed gonadal digenesis is presented, and the literature is reviewed.
在此，我们提出一个混合型性腺发育不良的病例，并做文献回顾。