..............page:5-7+12
..............page:13-15+28
The Discussion of Residence Elevator Energy-saving
XING Jie;WANG Zhi-yong;ZHOU Bing-chen;Yanshan Power Supply Company;Department of Electrical Power Engineering;Hebei Engineering and Technical College;Teaching Office;Hebei Engineering and Technical College;
..............page:38-41
..............page:53-55+62
..............page:56-59+76