一个简单 yet 智能的更换过程

在现代建筑中，方形天花灯逐渐成为家庭装饰的一部分，但随着更换的增多，很多家庭开始关注灯管的更换问题，_square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square square 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