英语词汇population gradation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	population gradation
释义	population gradation 简明释义族群等级网络释义 1 ?族群等级 ... 族群遗传学 population genetics 族群等级 population gradation 族群成长 population growth ... 2 ?种群阶梯 ... colour gradation 色等级 population gradation 种群阶梯 lateral gradation 侧夷酌 ... 双语例句 1 Results the average attrition gradation of the teeth in Neolithic population was 3.88. The attrition degree of the first molar was greater than that of the second! 结果新石器时期人类牙齿的平均磨耗级别是3.88级，磨耗程度第一磨牙大于第二磨牙、大于第三磨牙。
随便看	dual rotating diverter dual-rotation dual rotation dual rotation propeller dual-rotor helicopter dual rotor helicopter dual rotor dual rotor system dual-rotor system dual-route dual-routes dual rupture disks dual dual satellitism dual savings plan dual scaler dual scales dual scan dual-scan display dual scan display dual-scatter laser velocimeter dualscatter laser velocimeter dual Schmitt trigger dual school dual screen

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。