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经济效益
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经济效益
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经济学
经济效益
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economic benefit
经济效益
经济实践活动中取得的劳动成果与劳动消费之比,或产出的经济成果与投入的资源总量(包括人力资源、物力资源、财力资源)之比。
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space astrometry
space astronomy
space astrophysics
space at infinity
space attenuation
space average
space axis
space band width product
space bandwidth product
space-bandwidth product
space-base atmospheric remote sensing
Space-Based Infrared System
space-based integrated meteorology observation system
space-based interferometer
space-based observation
space-based radar
space-based telescope
space behavior of livestock
space biological engineering
space biological experiment
space biological rhythm
Space Biology
space biology
space biopharmaceutics
space biosafety
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