杨捷率队到上林县中学进行高考备考视导调研

应该加分呀












液体比重检测仪
http://www.cntrades.com/b2b/bjeternal12/sell/itemid-66258074.html
http://www.71p.net/c2957055.html
http://www.51sole.com/b2b/pd_46622185.htm
http://www.caigou.com.cn/Trade/Detail/1077433.shtml

不错，看看。












密度检测仪
http://www.caigou.com.cn/c56451/product_list_38576_75175.shtml
http://www.51sole.com/b2b/pd_46751973.htm
http://www.caigou.com.cn/c56451/product_list_38576_65491.shtml