It designs experimental teaching plans that orients to students'self - learning together with teacher's teaching and instruction.设计学生以 自学 自练为主,教师加强讲授与指导的教学实验方案....
Strut of cell of tube wall endodermis, appear hobnail kind dash forward to tubal antrum.管壁内皮细胞肿胀, 似鞋钉样突向管腔.The inner layer of the cortex differentiates into the endodermis.皮层的内层分化为内皮层.Phellem layer can do cork, endodermi...