职业卫生管理制度和操作规程等材料的英文

materials of the occupational health administrative system and operating rules and

• 职业:    occupation; profes ...
• 卫生:    hygienism; hygiene ...
• 管理制度:    management system
• 和:    mix; blend
• 等:    class; grade; rank
• 材料:    material