document.write ('<a href=/physics/1/8.htm target=_blank>共振与共鸣</a><br><a href=/physics/1/7.htm target=_blank>宇宙唱片</a><br><a href=/physics/1/5.htm target=_blank>次声杀人之谜</a><br><a href=/physics/1/4.htm target=_blank>鬼声</a><br><a href=/physics/1/3.htm target=_blank>声音之谜</a><br>')