The positive rates of CIA in grandparent breeding stocks, parent breeding stocks and current breeding stocks investigated were 50. 0%, 80. 0% and 93. 7% respectively.是什么意思_The positive rates of CIA in grandparent breeding stocks, parent breeding stocks and current breeding stocks investigated were 50. 0%, 80. 0% and 93. 7% respectively.在线翻译_英语_读音_用法_例句