document.write('<div class="contentBox">');
document.write('<img src="http://uphotos.eepw.com.cn/patch1982/thumb/avatar.jpg" width="50" height="50" />');
document.write('<div>');
document.write('<div class="nameTime">');
document.write('<a href="https://passport.eepw.com.cn/u/地瓜patch">地瓜patch</a> · 2016-02-16 21:48:59');
document.write('</div>');
document.write('<p>');
document.write('变换器工作在DCM工作模式');
document.write('</p>');
document.write('</div>');
document.write('</div>');
document.write('<div class="contentBox">');
document.write('<img src="http://uphotos.eepw.com.cn/patch1982/thumb/avatar.jpg" width="50" height="50" />');
document.write('<div>');
document.write('<div class="nameTime">');
document.write('<a href="https://passport.eepw.com.cn/u/地瓜patch">地瓜patch</a> · 2016-02-10 22:28:05');
document.write('</div>');
document.write('<p>');
document.write('Ton为开关导通时间，开关频率f=1/Ts');
document.write('</p>');
document.write('</div>');
document.write('</div>');