1. The animal fat group consists mainly of lard from the pig and tallows from bovine and ovine sources; these are characterized by 30-40% c16 and C18-saturated fatty acids and up to 60% oleic and linoleic acids.
动物脂肪属主要由猪油、牛脂和羊脂组成。它们以含30～40%的C16和C18饱和脂肪酸和高达60%的油脂、亚油酸为特征动物脂肪的熔点比较高，部分原因是它们的饱和脂肪酸含量和甘油脂类型所致。
tallows的解释
2. The animal fat group co ists mainly of lard from the pig and tallows from bovine and ovine sources; these are characterized by 30-40% c16 and C18-saturated fatty acids and up to 60% oleic and linoleic acids.
动物脂肪属主要由猪油、牛脂和羊脂组成。它们以含30～40%的C16和C18饱和脂肪酸和高达60%的油脂、亚油酸为特征动物脂肪的熔点比较高，部分原因是它们的饱和脂肪酸含量和甘油脂类型所致。
3. The quality index of the American tallows was detected. The influence factors were investigated by sorbents and process conditions.
分析检测了美国牛油的质量，通过选择不同的吸附剂、采用不同的工艺条件（温度、时间、酸值）的实验，考察了对美国牛油脱色效果的影响。