film disk（胶片盘）是什么意思？音标发音+图解场景

胶片盘 /ˈfɪlm ˈdɪsk/ n

English: film disk · 胶片盘

释义：Round part surrounded by small rectangular films that is inserted in the rigid camera body. disk camera

这个词出现在以下图解场景（1）