Tail buffeting at high angle of attack causes distinct fatigue problem on tail structure of twin tail fighters.In this study,a piezoelectric active control expe
Nanning Chemical Industry Co.,Ltd.(Nanning Chemical,SH:600301) is an important producer of basic chemical raw materials in China.It is located in Nanning of Gu
Water demand increases continuously with an increasing population and economic development. As a result, the difference between water supply and demand becomes
【正】 Steady growth in production Polymer emulsion has been widely applied for its advantages such as good adhesiveproperties,colorless and transparent film,sa