英语词汇age class怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	age class
释义	age class 简明释义 [昆][林] 年龄级网络释义 1 ?龄级 ... 径阶 diameter class 龄级 age classes 龄组 age groups ... 2 ?不同年龄组种群的年龄结构（age structure）就是不同年龄组（age classes）在种群中所占比例或配置状况，它对种群出生率和死亡率都有很大影响。就植物而言，年龄结构就是植物种群结构的主要因素。短语 1 Gradation of age classes 龄级顺序 2 Four of six age classes 六年纪四班 3 Area of age-classes 龄级面积双语例句 1 Most 1st age class rhizomes of present year developed from the 2nd age classes. 当年形成的1龄级根茎大多是从2龄级根茎上产生。 2 The age structure of rhizome length showed that the 1st and the 2nd age classes were equal on the whole, the 3rd age suddenly reduced. 根茎长度的年龄结构表现为1龄级与2龄级大体相同，3龄级陡度减少。 3 Regulations such as minimum operating age, restricted operating areas and compulsory classes in water safety are essential. 诸如最低操作年龄、限制操作区域和水上安全必修课等规定是必不可少的。
随便看	concentrating concentrating ability Concentrating Ability,Kidney concentrating agent concentrating capacity concentrating coil concentrating collector concentrating column concentrating culture concentrating cup concentrating effect concentrating fertilizer concentrating flux plate concentrating flux sleeve concentrating function concentrating funds concentrating machine concentrating mill concentrating on concentrating pan concentrating petroleum product concentrating pond concentrating reflector concentrating concentrating solar collector

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