But stainless steel tube outer wall and the outer wall of the copper pipe which pipe bead setting more is still unclear, but can say two pipe wall mostly filmcondensation.
但不锈钢管外壁和铜管外壁哪种管材的珠状凝结更多尚不清楚，但可以说两种管材外壁大部份是膜状凝结。
2
Soft film ceiling surface after anti fog treatment, not because of environmental moisture condensation.
软膜天花表面经过防雾化处理，不会因为环境潮湿而产生凝结水。
3
A novel solar desalination unit with vertical tube falling film evaporation and horizontal tube condensation was designed.