"曲面共轭" google pic search

"曲面共轭"

http://www.google.com.hk/search?hl=zh-CN&safe=strict&biw=969&bih=466&gbv=2&tbm=isch&sa=1&q=%22%E6%9B%B2%E9%9D%A2%E5%85%B1%E8%BD%AD%22&oq=%22%E6%9B%B2%E9%9D%A2%E5%85%B1%E8%BD%AD%22&aq=f&aqi=&aql=undefined&gs_sm=s&gs_upl=4277l4728l0l2l2l0l0l0l0l137l209l1.1l2