A Case Study of the Scheming of Urban Tourist Images
tian hong~(1 ); zou zai-jin~(2) (1. dept.of economics; politics and law; chongqing normal university; chongqing 400047; 2. school of economics and management; lanzhou university; lanzhou 730000; china)
A Design to Realize the Lead and Lag Control in Digitizing Oscilloscope
yuan ji-min~1; li xiao-ling~1; chen chang-ling~2 (1.dept.of electric-information engineering; panzhihua college; panzhihua sichuan 617000; 2.college of automation engineering; university of electronic science and technology of china; chengdu 610054; china)