carbon

• Isolable carbocyclic compounds contain seven or fewer carbons in the cycle .
  可分离的碳环化合物环内含七个或七个以下的碳。
• Sometimes the carbon rods are copper coated to improve electrical conductivity .
  有时这些碳棒包上一层铜，以增加其导电性。
• The black soot deposited on a kettle by a smoky campfire is nearly pure carbon .
  带烟的营火在水壶上熏积的黑煤烟几乎是纯碳。
• The use of sulfates and carbon dioxide requires strictly anaerobic conditions .
  使用硫酸盐和二氧化碳时，需要严格的厌氧条件。
• Its superiority to carbon steel, which was the material used for many years, is evident .
  显然它比沿用多年的材料--碳钢优越。
• The glycine can give rise to serine with the elimination of carbon dioxide and ammonia .
  甘氨酸去除二氧化碳和氨能产生丝氨酸。
• In the ethyne molecule, a double bond links together the two carbon atoms .
  在乙烯分子中是由一个双键将两个碳原子连结在一起的。
• He postulated that the carbon reacts initially with the sulfate to form calcium sulfide .
  他认为碳最初和硫酸盐反应生成硫化钙。