occupationaladj.职业的
occupational dermatoses of miners矿工职业性皮肤病, 煤矿业皮肤病
occupational safety consciousness安全意识
Occupational Measurement Squadron专业测量中队
occupational distribution pattern职业类别分布
occupational qualification system职业资格制度
occupational radiation protection职业性辐射防护
Occupational health investlgatlon职业卫生调查
occupational safety and health law安全生产法