jgg     2007 27 (2):  122-124    ISSN: 0412-1961  CN: 21-1139/TG STUDY ON HLS ACCORDING TO FLUID MECHANICA THEORY He Xiaoye 1) ; and He Xiaohong 2) 1)University of Science and Technology of China, Hefei 2300292)Anhui Institute of Architecture and Industry, Hefei 230022 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null