In this research,the swine sera from part breeding pig plants in Sichuan province were collected,and the sero-antibody of PPV was detected by LAT. The result shows that the average positive rate is56%,and the highest is93%,the lowest is14.71%.是什么意思_In this research,the swine sera from part breeding pig plants in Sichuan province were collected,and the sero-antibody of PPV was detected by LAT. The result shows that the average positive rate is56%,and the highest is93%,the lowest is14.71%.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句