"during"的搜索结果

these were field clinicians during the world wide smallpox eradication efforts

标签: these,were,field,clinicians,du 浏览: 1

stearman bi plane is spraying an insecticide during malaria control operations in savannah ga

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rabbit was caught in a national trap and was later tested during an arbovirus study

标签: rabbit,was,caught,in,a,nationa 浏览: 2

public health scientist collecting field data during a plague epidemiologic investigation

标签: public,health,scientist,collec 浏览: 2

photograph shows the firing of cannon nets during the attempted capture of birds

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photograph showed a public health professional consulting with an elderly woman during the swine flu

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peru hospital waiting room that had to be converted to an emergency cholera ward during an epidemic

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bangladesh secretaries of health as he was seated behind his desk during a meeting

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pretoria south africa during the medical evacuation of del conn

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victoria falls photo was taken during a visit to rhodesia now zimbabwe

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this location was one of the many hospitals visited by public health officials during the 1975 rhodesian

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nurse in an isolation ward during the 1975 marburg outbreak in johannesburg south africa

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group of dead adult mosquitoes scattered uniformly throught the field of view during a vector control study

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historical photograph inside of an operating room suite during a surgical procedure

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administration of a vaccine during immunization project

标签: administration,of,a,vaccine,du 浏览: 1