1. To deposit(a metal) on a substrate by vacuum sublimation. 
   使沉淀通过升华使（金属）等沉淀在底层
2. A fine powder produced by condensation or sublimation of a compound. 
   细粉末由化合物浓缩或升华而得到的精细粉末
3. heat exchanger with heat pipes 
   热管换热器
4. heat source of district heat supply 
   城市集中供热热源
5. heat exchanger of district heat supply network 
   热网换热器

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• 1. 升华热
  sublayer 底层...sublimation heat 升华热...sublimation point 升华点
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