问题描述：
请大神帮我翻译一下这句话谢谢!
When the item description calls for a bus duct to box without losing the minimum degree of protection of the box on the bus duct which is higher.
When the item description calls for a bus duct to box without losing the minimum degree of protection of the box on the bus duct which is higher.
问题解答：
我来补答展开全文阅读