the yield of milk

• 产奶量

the yield of milk的用法和样例：

例句

1. The cows are producing a lot of milk.
   这些母牛的产奶量很大。
2. No significant increase in milk output and composition were observed for the cows fed LPNB,HPNB and HPB.
   高低蛋白质水平加入相同缓冲剂，低蛋白质组的产奶量，乳成分产量均优于高蛋白质组。