stretch ceiling film是什么

stretch ceiling film是什么 stretch film packing machine翻译 ceiling stretch stretch film 是一种什么膜 原料是什么?跟polyimide film 有什么区别? ceiling是什么意思 reflected ceiling ceiling clearance pallet stretch plastic stretch 英语翻译last.Sunday,Peter and his mother went to the Space Museum.They watched a film.The film was on the ceiling!There were many lights on the ceiling,It look like the sky,said Peter.A man talked about the film,this is the earth.Our earth loo 缠绕膜,即拉伸膜（stretch film）是用什么做得?一般是用LLDPE,还是LDPE,还是别的什么? Film ceiling什么意思? ceiling function是什么意思 coffered ceiling是什么意思 led ceiling recessed 是什么意思 reflected ceiling是什么意思