近年来这方面的研究开发主要是围绕结构 、 合成 、 表征和催化反应等方面开展的. For those who at any time ought to change the underlying implementation you're still totally free to refactor them as properties with no breaking any dependent code. 2 @KellyThomas Just attempting to keep the example very simple. To get it done ideal you would need https://propertiesnoidacentral.blogspot.com/