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地球演化历史
释义
地球演化历史
Encyclopedia
理学
〔地质总论〕
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history of earth evolution
地球演化历史
地球形成于约45.6亿年前,历经冥古宙(约46亿~40亿年前)、太古宙(40亿~25亿年前)、元古宙(25亿~5.41亿年前)和显生宙(5.41亿年以来)等时期的无数变革,最终成为今天的面貌。
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occupational disease compensation
occupational disease identification
occupational disease management
Occupational Disease Prevention and Treatment Law of People's Republic of China
Occupational disease rehabilitation
occupational disease report
occupational diseases
occupational diseases by target organ systems
occupational diseases caused by physical factors
occupational diseases induced by biological factors
occupational diseases induced by physical factors
occupational drug-like dermatitis
occupational ear-nose-throat disease
occupational electro-optic dermatitis
occupational epidemiology
occupational ergonomics
occupational exposure
occupational exposure limits
occupational exposure pollution
occupational eye disease
occupational guidance
occupational hair damage
occupational hazard
occupational hazard of high frequency electromagnetic field
occupational hazardous factor
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