1 IntroductionThe range and application, actual and potential, of water-soluble block-copoly (oxyalkylene)s have beenextensively reviewed in recent compilations
The automobile era meant a series of changes in society,including the residential structure, working structure,population structure, employment structure, and u
In order to promote trade of China and France and research the development of Chinese cities as well as the housing policy, from October 8 to I6, a delegation o