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to phrases
electron ray
space
电子射线
tech.
电子束
electron ray
:
42 phrases
in 13 subjects
Chemistry
1
Earth sciences
5
Ecology
1
Electronics
8
Engineering geology
1
General
5
Geology
6
Geophysics
1
Metallurgy
4
Polygraphy
1
Space
3
Technology
5
Telecommunications
1
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