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光电发射体
gen.
photocathode
tech.
photoelectric emitter
;
photoelectrical emitter
;
photoemitter
光电
子
发射
放射
体
器
gen.
photoemitter
光电 发射体
:
20 phrases
in 8 subjects
Chemistry
1
Earth sciences
3
Ecology
1
Electronics
3
Food industry
2
Geology
2
Technology
6
Water resources
2
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