留兰香薄荷又名绿薄荷，留兰香薄荷和柠檬薄荷的区别： 1、成分不同 开发者_如何学Python留兰香薄荷含有芳香油，含油率0.6-0.7%，主要成分有香旱芹子油菇酮、柠檬烃、水芹香油烃等，而柠檬薄荷含有挥发油，含油率0.8-
I have a class A which have a list of B elements. In my A class i would like to add: int size; which will be valued with the number of B elements. So when I would call myA.getSize() I will have it
加载中,请稍侯......