群数 meaning in English

population

On the least bound of the number of non - exponent subgroups of ono - cyclic groups
关于非循环群的非幂子群数的下确界
The results show that the soil animal number and diversity are the highest in tsuga stand , followed by yusania and miscanthus stands
林相中土壤动物数量及类群数以铁杉林为最多，其次为箭竹林及高山芒。
Overall , between 2 and 10 percent of mammal populations ( groups of a single species in a specific geographical location ) are thought to have disappeared along with their habitat
总体估算，哺乳动物种群数目（一个特定地理区域内单一物种的群数）的2到10被认为已经和它们的生态环境一并消失。