sheet film（散页片）是什么意思？音标发音+图解场景

散页片 /ˈʃiːt ˈfɪlm/ n

English: sheet film · 散页片

释义：Semirigid film made to fit specific applications; it is usually loaded into a view camera. view camera

这个词出现在以下图解场景（1）