occupational

• Status of occupational health regulation execution
  职业卫生执法现状调查与对策
• Occupational health noise assessment for weaving factory
  对织布厂进行工作噪音评估
• Occupational damages on electric welder and prevention
  电焊工的职业危害及预防
• Advances in the assessment method of occupational stress
  职业紧张评估方法研究进展
• Prospects for occupational hygiene in twenty - first century
  21世纪职业卫生展望
• Occupational safety and health administration in america
  美国的职业安全与卫生监管
• The occupational diseases are not found in mineral drivers
  矿运司机未发现职业病。
• Occupational health and safety management systems set
  职业健康和安全管理体系
• Summary of researches on teachers ' occupational tiredness
  教师职业倦怠问题研究综述
• Occupational deafness employees protection compensation
  职业性失聪(雇员保障及补偿)