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卫生学
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卫生学
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Hygiene
卫生学
研究环境与人体健康关系,识别、评价、阐释环境因素对健康及其疾病的影响,提出改善环境、预防疾病、促进健康的措施和对策的学科。
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railway transportation revenue
railway transportation statistics
railway transport capacity
railway transport enterprise
railway transporter for fairing
railway transport freight tariff
railway transport industry
railway transport tariff
railway transport vehicle for missile
railway tribology
railway tunnel maintenance
railway unusual-soil subgrade
railway video monitoring system
railway water pollution prevention and control
railway with public welfare characteristics
RAIM
raimod's cotton
Raimond crater
Raimundo Correia
Rain
rain
rain and snow gauge
rain and snow recorder
rain attenuation
rain band
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