disassembly       
noun [ U ] uk/ˌdɪs.əˈsem.bli/ us/ˌdɪs.əˈsem.bli/
 拆卸,分解
the process of separating a machine or structure into its different parts
  the disassembly of nuclear weapons 拆解核武器  
They take unwanted computers and TVs for disassembly. 他们把废弃的电脑和电视进行拆解。