/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: wooyan https://cdn.slidesharecdn.com/profile-photo-wooyan-48x48.jpg?cb=1666166869 ÈËÉú¥·¥ã¥«¥ê¥­£¡