developing baths（显影盘）是什么意思？音标发音+图解场景

显影盘 /dɪvˈɛləpɪŋ ˈbaθs/ n

English: developing baths · 显影盘

释义：Trays used for the various steps in processing exposed photographic paper to obtain a proof in black and white.

这个词出现在以下图解场景（1）