1. a solid solution of carbon in alpha-iron that is formed when steel is cooled so rapidly that the change from austenite to pearlite is suppressed; responsible for the hardness of quenched steel. 
   含碳α铁固体溶体，钢从奥氏体向珠光体转变过程因急速冷却受到抑制时形成，是淬火钢坚硬的原因。
2. carbon and graphite material 
   碳和石墨材料
3. carbon dioxide and agriculture 
   二氧化碳与农业
4. carbon fibre reinforced plastics 
   碳纤维增强塑料
5. control of carbon oxides 
   碳氧化物控制

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• 1. 碳
  alpha amino acid α胺基酸...alpha carbon α碳...alpha decay 阿伐衰变；α衰变
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