打底层
- 网络under coat; prime coat
打底层打底层
under coat
英语语言词典 # 翻译 ... ... middle coat 中层 under coat 打底层 first coat 底漆 ...
prime coat
... 中层 middle-level 打底层 prime coat 中间馏分 middle cut;middle fraction;middle oil distillate;middle runnings ...