At this stage of crystallization imperfect crystalline regions are formed and an abrupt increase of density is observed.

在这一结晶阶段生成不完善的晶区并伴有密度剧增现象。

youdao

The present related class and grade culture's research was still at the start stage, the theory construction is imperfect, also lacks may supply the actual operation the successful model.

目前有关班级文化的研讨尚处于起步阶段，理论建设还不完美，也缺少可供实际操纵的胜利模型。

youdao