1. a dark bituminous substance found in natural beds and as residue from petroleum distillation; consists mainly of hydrocarbons. 
   一种沥青质的黑色物质，存在于天然矿床中，亦可用蒸馏法提取石油中的矿渣获得，主要由碳氢化合物组成。
2. Any of various thick, dark, sticky substances obtained from the distillation residue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving. 
   沥青，人造沥青某种厚厚的、黑而粘的物质，由炭焦、木焦或石油的剩余物中提炼出来，用于防水、盖屋顶、填缝和铺路
3. The solid residue of impure carbon obtained from bituminous coal and other carbonaceous materials after removal of volatile material by destructive distillation. It is used as a fuel and in making steel. 
   焦炭从烟煤和其他含碳物质中经过毁馏除去其中的易挥发物质而获取的含杂质碳的固体残余物，作燃料及炼钢之用
4. destructive distillation of wood 
   木材干馏
5. distillation with chemical reaction 
   反应精馏

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• 1. 蒸馏残渣
  distillation range 蒸馏范围...distillation residue 蒸馏残渣...distillation test 蒸馏试验
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• 2. 蒸馏残余物
  distillation range 蒸馏范围...distillation residue 蒸馏残余物...distillation 蒸馏蒸馏液
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• 3. 溶出残渣
  [医]半胱氨酰残基 digestion residue...溶出残渣 distillation residue...蒸馏残液[残渣] distillation test residue
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