1. galactic radio background radiation 
   银河背景射电
2. In the areas surrounding the radiation sources, the air absorption dosage rate of the ambientγradiation, the specific activity of the totalβradioactive of the aerosol or the settling matter, and the radioactive nuclide concentration of the water and animals (plants) samples are all within the increase and decrease ranges of the natural background levels. 
   在辐射源周围地区，环境γ辐射空气吸收剂量率、气溶胶或沉降物总β放射性比活度、水和动(植)物样品的放射性核素浓度均在天然本底涨落范围内。
3. Background and Appreciation of poems  
   诗的背景及欣赏
4. Similarities in age and background 
   (争辩等）处於即将爆发的状态
5. activity theory of learning 
   学习的活动理论

查看更多例句 相关情景会话

• 1. 本底放射性
  back-scattered ground roll反向散射地滚波...background activity本底放射性...background batch process基础程序组方法
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• 2. 背景活动
  Babinski-Nageotte syndrome: 巴宾斯基-纳若特综合征...background activity：背景活动...Bailey-Cushing syndrome:贝利-库欣综合征
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• 3. 本底放射性，本底活性
  (1)背景(2)本底(3)基礎background activity...本底放射性，本底活性background brightness...背景亮度background camera
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• 4. 背景活性
  背景 background...背景活性 background activity...背景凝聚 background condensation
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