butterfat production乳脂量
butterfat globule乳脂肪球
butterfat tester乳脂测试员
butterfat percentage乳脂含量;乳脂率
butterfat yield乳脂量
butterfat detail乳脂肪
butterfat test乳脂测定
N（名词） the fatty substance of milk from which butter is made, consisting of a mixture of glycerides, mainly butyrin, olein, and palmitin 乳脂