v.回[逆]交，回交杂种( backcross的第三人称单数 )...

backcrossed的音标：...

backcross的复数形式为：backcrosses...

backcrossing的音标：...

backcross的音标：backcross的英式发音音标为：[bækk'rɒs]backcross的美式发音音标为：[bækk'rɒs]...

backcross的一般过去时为：backcrossed...

n.回[逆]交，回交杂种vt.使回交vi.回交...

backcross的现在完成时为：backcrossed...

backcross的现在进行时为：backcrossing...

backcrosses的音标：...

backcross的第三人称单数（三单）为：backcrosses...

F 1 females could be backcrossed to the male homozygous recessive parent.也可用雌性F1与隐性纯合雄性亲本回交....

v.回[逆]交，回交杂种( backcross的过去式和过去分词 )...

v.回[逆]交，回交杂种( backcross的现在分词 )...

A burro is carrying salt of one large bag backcross a river.有一头驴子驮着一大袋子盐过河.The method can be conveniently applied to practical backcross breeding programs.该方法可以很方便地应用于实际的回交育种....