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Photon Activity Rate
astr., abbr.
PAR
Photon:
48 phrases
in 16 subjects
Antennas and waveguides
2
Astronomy
4
Chemistry
1
Communications
1
Earth sciences
3
Electronics
6
Health care
3
Lighting
other than cinema
9
Measuring instruments
1
Mechanic engineering
1
Medical
7
Microsoft
1
Natural sciences
2
Nuclear physics
1
Physical sciences
5
Radiology
1
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