Mary has great powers of resistance and will get well quickly. 玛丽抗病力很强,很快就会康复的。
The disease might be induced by high density of piglets, had environment conditions, piglets with different day old and piglets introduced from different pig farms. 保持猪舍及周围环境卫生,加强饲养管理工作,合理配比饲料,提高抗病力,是预防发病的主要措施。
Host resistance and fungal virulence parallel each other in the cross. 寄生的抗病性的病原菌的毒力在杂交中是势均力敌的。
Some genes manifested resistance differentiation to specifically races. 某些基因对特定的生理小种表现出抗病性分化。