2) crossbred milk cows
杂交奶牛
1.
Objective In order to find out the best medicine to cure the psoroptic acariasis of the crossbred milk cows,the curative effect is observed on the 20th day,40th day,60th day and 80th day after using the medicine.
目的为查明治疗杂交奶牛痒螨病的最佳药物。
补充资料:草地上的奶牛业
草地上的奶牛业
草地上的奶牛业 王培摄
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条