The research of ground source heat exchanger which is U shape bellows on ground source heat pump system's heat exchanging in soil陈萌, 官燕玲17-20
An analysis on economic efficiency of adding a new pneumatic water pump for the heat-power plant of baogang group陈鹏, 张懿君27-28
Application of parallel active power filter to eliminate harmonic produced by converter used in air compressor崔峰, 李志晓, 刘捷, 巩超38-40
The application of new pattern frequency conversion and constant pressure to water supply equipment王耀成, 陈超, 项阳41-42
