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航海人员卫生保健
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航海人员卫生保健
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医学
航海人员卫生保健
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Seafarer's health care
航海人员卫生保健
做好航海人员卫生保健工作,对提高航海人员海上作业能力、保障身心健康、预防疾病的发生有着重要意义。
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ecologically vulnerable zone
ecological man
ecological management
ecological Marxism
ecological meteorological disaster
ecological migration
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ecological niche
ecological niche evaluation
ecological niche modeling
ecological occupation-compensation balance
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ecological productivity of grassland
ecological protection engineering
ecological protection of the Sanjiangyuan areas
ecological protection red line
ecological protection redline system
ecological protection tax
ecological psychology
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