职业接触限值
oel
Occupational exposure lmits
Occupational exposure limits
Occupational exposure limit
occupational contacting limit
铅职业接触
Occupational lead exposure
职业接触粉尘
Occupational dust exposure
职业接触锰
Occupational exposure to Manganese
职业接触评估
Occupational exposure assessment
Oceupational exposure assessment
职业接触人群
Occupational contact crowd
Occupational exposure population
职业接触水平
occupational exposure level
Occupational exposure levels
职业接触者
blood lead
Occupationally contacted workers
北京工业职业技术学院
beijing polytechnic college
Beijing Vocational Technological I nstitute of Industry
北京工业职业技术学院学报
Journal of Beijing Polytechnic College
北京农业职业学院学报
Journal of Beijing Vocational College
福建农业职业技术学院
fujian agriculture vocational college
fujian agricultural professional-technical school
fujian agricultural vocation-technical college
甘肃工业职业技术学院
aluminide micro-crystalline coating
甘肃林业职业技术学院
gansu forestry technological college
甘肃林业职业技术学院经济管理系
economical management department
Vocational Technical College of Forestry
甘肃林业职业技术学院资源环境系
Northwest Normal University Geography and Environment Science Ccollege
工厂企业职业人群
Staffs in factories and enterprises