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来源:雅诚德英语网
The reasons of negative energy balance appeared on dairy cows, disserves and prevention measures were introduced in this article.
作者简述了奶牛能量负平衡产生的原因、对奶牛的危害及其防治措施。
The reasons of negative energy balance appeared on dairy cows, disserves and prevention measures were introduced in this article.
作者简述了奶牛能量负平衡产生的原因、对奶牛的危害及其防治措施。