摘要： <正>Fault Diagnosis in Dynamic Processes Using a New Type of Wavelet-Sigmoidal Function Based Neural Networks ........................................................................ Zhao Jinsong , Chen Bingzhen and Shen Jingzhu Feb. No 1 Limits of Superheat of Binary Liquid Mixtures Under Pressures................................................... Liu Zunji, Cao Hongbin , Sun Liangfeng , Shi Yuwen and Song Shimo Feb. No 1 Turbulent Heat Transfer in Helical Coils ........................ Bai Bofeng, Gao Liejin, Chen Xuejun and Feng Ziping Feb. No 1 Equation of State Based on Model of Infinite Dilution Activity Coefficients ............................................................ Huang Qiang , Chen Genghua , Han Shijun and Jin Zhangli Feb. No 1