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国际无线电科学联合会
avia.
International Scientific Radio Union
earth.sc.
International Union of Radio Science
el.
International Union of Radio Sciences
;
Union Radio-Scientifique Internationale
(France)
space
Union Radio Scientifique Internationale
tech.
International Radio Scientific Union
国际无线电 科学 联合会
:
2 phrases
in 1 subject
Earth sciences
2
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