Position and function of dance in ancient sport of China
wang ai_min 1; gong bin 2; jia fu_ming 1 (1. dept. of p. e. of shaanxi institute of technology; hanzhong 723003; china; 2. dept. of p. e. of changde teachers college; changde 723003; china)
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On Riemann's theorem of Directly——Riemann integral
xiong qi_cai 1; hong qi 1; feng zhen_ling 2 (1. dept. of m. and c. s. of hanzhong teachers college; hanzhong 723001; china; 2.xi an commanding school of fire control; xi an 710048; china)
Analysis and study of the instrumental motivation
he ning; zeng xiao_shan; wang jian_wu; zhang dong_sheng; lin yin; liu mi_ge; sun zhi_xue; liu xue_qin; tang hui( shaanxi institute of technology; hanzhong 723003; china)