Anas platyrhynchos短语¹⁴⁴⁹⁷²⁺² 基本英英近义反义例句 绿头鸭 Noun: wild dabbling duck from which domestic ducks are descended; widely distributed近义词mallard绿头鸭一种野鸭… Principal component analysis was carried out to study the slaughtering performance of cross combinations using Anas platyrhynchos as male parent. 利用主成分分析对以绿头野鸭为父本的不同杂交组合的屠宰性能进行了研究。 dictall