电子商务网站实验指导书，供学习电子商务网站设计的同学使用-Experimental instructions e-commerce sites, e-commerce web site design for the study of students using

设计了基于脉冲宽度调制技术的太阳能充电控制系统对蓄电池充电效果进行了验证 实验结果表明系统 能够有效判断蓄电池的充电状态并采取相应的充电方式达到延长其使用寿命的目的-Is designed based on pulse-width modulation technology, solar charge control system for battery charging effects were verified by experimental results show that the