backcross的现在完成时怎么写

n.回[逆]交，回交杂种vt.使回交vi.回交...

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....

backcross的第三人称单数（三单）为：backcrosses...

backcross的现在进行时为：backcrossing...

backcross的复数形式为：backcrosses...

backcross的一般过去时为：backcrossed...

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]...

“灭菌”的拼音为：miè jūn...

“酸牛奶”的英语可以翻译为：yoghurt，sour milk ...

hyperforming的音标：hyperforming的英式发音音标为：['haɪpəˌfɔ:mɪŋ]hyperforming的美式发音音标为：['haɪpəˌfɔmɪŋ]...

百鸟齐鸣报春到.The song of birds heralds the approach of spring.椋鸟齐鸣.The starlings made a clamour.金鼓齐鸣.All the gongs and drums are beating....

霉康唑，咪康唑...

familiarity的复数形式为：familiarities...

“牵引力”的英语可以翻译为：pull，traction，[化] tractive effort ...

“愚人”的拼音为：yú rén...

In China alternative dispute resolution ( ADR ) regarding mediation as the traditional symbolize.(内容提要)中国的非诉讼纠纷解决机制(ADR ) 以调解为传统象征.The dispute was settled by mediation of the third country.这场争端通过第三国的斡旋而得以解决....the belief...

“凤凰木”的英语可以翻译为：flame tree，flame-tree ...

Ornamental grass such as mondo grass, pampas grass, blue fescue, etc.观赏植物包括粗草 、 蒲苇 、 牛毛草等....

laburnums的音标：...

early的音标：early的英式发音音标为：['ɜ:li]early的美式发音音标为：['ɜrli]...

“翼型”的英语可以翻译为：airfoil profile，airfoil section，airfoil shape，wing section，aerofoil ...

“质”的拼音为：zhì...