改进实验方法，进行实验绿色化设计。
Improve experiment methods and design the greening of experiments.
介绍了牛奶中青霉素类抗生素残留的来源、危害，并对在牛奶中常见的青霉素类抗生素的检测方法进行了阐述，对于改进实验方法和提高奶及奶制品质量都有一定的借鉴作用。
The article briefs the source and harm of beta-lactam antibiotic in milk. The article also provides information for improvement on the methods of determination and quality of milk and milk products.
为了获得清晰、可靠的piv底片，人们对实验方法作了很多改进。
In order to get clear and reliable PIV negative, many experimental methods have been improved.
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