age grading meaning in English

年龄分级
年龄级差

2 , the survival curves of populations of e . chloranthoides in jigong mountain and dongwenquan are diagonal , which indicates that the individuals of each age grade within the two populations possesses the roughly identical death rate and the populations belong to the stable ones , while the survival curve of population in beiwenquan is concave , which shows that the population belongs to the increase one
2 、种群存活率曲线表明，鸡公山和东温泉的缙云卫矛种群存活率均呈对角线型，说明这两个种群属于稳定型，而北温泉种群的存活率曲线呈凹型，属于增长型种群。
Red yellow la yuan will devote oneself to 0 - 6 year old make brand - new study and surroundings for each age level darling , course has : different age grading is close child excellent job of game class , united states is polyphonic happy class , outside teach english the class . , class of unconscious family name . , happy body class . , painterly class . , calligraphy class , frame beat class , ancient kite class , thespian performance class
红黄蓝园将致力于0 - 6岁为各个年龄阶段宝宝打造崭新的学习和生活环境,课程有：不同年龄分阶段亲子游戏班、美国妙事多音乐班、外教英语班. 、蒙氏班. 、快乐形体班. 、绘画班. 、书法班、架子鼓班、古筝班、戏剧表演班等。