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. of the abstraction. The values for getRadius() or getCircumference() in the above case in point can be saved specifically, or they may be calculated, it isn't going to matter into the caller; the setters may or may not have side effects; it doesn't matter on https://www.tumblr.com/centralpark104