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掩膜 yǎnmó
el. mask; masking film
掩〔遮〕膜
gen. mask
光刻掩膜 yǎnmó
space mask
掩 膜: 53 phrases in 12 subjects
Agriculture1
Air defense1
Cartography1
Chemistry1
Computers1
Electronics15
Information technology5
Metallurgy2
Oil / petroleum1
Space9
Technology13
Telecommunications3