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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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positive bias
positive boundary
positive bounded operator
positive braid
positive bundle
positive calculus
positive chain complex
positive channel metal-oxide-semiconductor circuit
positive channel metal-oxide-semiconductor integrated circuit
positive charge
positive closure
positive clutch
positive column
positive complex
positive component
positive cone
positive contrast
positive contribution
positive contribution Monte Carlo method
positive control
positive correlation
positive crystal
positive current
positive curvature
positive curvature manifold
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