定流量冷凍水二級泵
Secondary cooling-water pump with fixed flow rate
供熱係統內管道和組件絕熱
insulation for pipes and compoments in heating system
組合式冷卻水機組
integrated 機組(?) for cooling-water
空氣換熱器進行熱回收
Air heat exchanger for heat recovery
緊湊型日光燈(上帝啊怎麽還有鬆散型的嗎?)
Compact lightbumb
Not very sure as the whole context is necessary for translation.
Have a nice weekend