1)single-U groove with sloping sides,单U形坡口2)single U tube,单U形管3)single U tube,单U型管4)single U shaped and double U shaped vertical borehole,单U、双U型埋管5)single U-tube heat exchanger,单U型管换热器6)single and double U-pipe ground heat exchanger,单U、双U型井埋管
用法例句
Establishes an experiment system for single U tube,double U tube and tube-in-tube heat exchangers,studies the variation of the heat exchange with time during heat pump continuous and intermittent operating separately.
