这些3-A公认惯例应适用于挤奶系统中使用的设备，该系统从用于奶牛提取牛奶的设备开始，并继续适用于系统中的所有组件，不包括储存原料奶或从奶牛场中取出牛奶的容器。

These 3-A Accepted Practices shall pertain to equipment used in a milking system that begins with the equipment applied to the cow to extract milk and continues to all components in the system exclusive of the container in which the raw milk is stored or from which the milk is removed from the dairy farm.