Vitamin D, Choline and L-carnitine are indispensable vitamins for growth of animal.
维生素D、胆碱、L-肉碱是动物生长过程中不可缺少的维生素。
The method was proved to be simple and accurate, and can been applied to the determination of vitamin D, choline and L-carnitine in milk powder sample with satisfactory results.
为奶粉中这三种维生素的含量测定的国标方法改进提供了参考方法，同时也适用于对其他液态奶，奶饮料及保健品中维生素D、胆碱、L-肉碱含量的测定及确证。
The method was proved to be simple and accurate, and can been applied to the determination of vitamin D, choline and L-carnitine in milk powder sample with satisfactory results.
为奶粉中这三种维生素的含量测定的国标方法改进提供了参考方法，同时也适用于对其他液态奶，奶饮料及保健品中维生素D、胆碱、L-肉碱含量的测定及确证。
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