灌注桩回转式钻机反循环成孔施工

讨论灌注桩回转式钻机反循环成孔施工中出现的问题及处理方法     

电动汽车:一个用电增长点的考察

"Spread of marketing needs to be considered from thefact of Tianjin City. At least electric automobile is a goodsuggestion on it." said Kou Shiqing, general manager ofTianjin Electric Power Company. In order to widen themarket of electric power and improve the atmosphere qual-ity of city, Tianjin Electric Power Company invited leaderfrom city economy.