防护调查 meaning in English

protection survey

Survey of basical condition and protection of medical x - ray unit
射线单位基本状况及防护调查
Standard investigation method for corrosion and protection of steel pipelines and tanks
钢质管道及储罐腐蚀与防护调查方法标准
Research on and management of the protective measures during tumor chemotherapy at primary hospital
基层医院肿瘤化学治疗的防护调查与对策