单词abacus
n.: 算盘;【建】(圆柱顶部的)顶板网络: 算盘子二醇
(圆柱顶部的)顶板
算盘
复数:abacuses
Occurrence, damage and control technique of the tobacco whitefly, Bemisia abaci
烟粉虱发生危害及控制技术