cou·pler /ˈkʌp(ə)lɚ/
  連結者;配合者;聯結器
  coupler
  藕合器
  coupler
  光耦合器
  coupler
  耦合器
  Coup·ler n. One who couples; that which couples, as a link, ring, or shackle, to connect cars.
  Coupler of an organ, a contrivance by which any two or more of the ranks of keys, or keys and pedals, are connected so as to act together when the organ is played.
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  coupler
       n : a mechanical device that serves to connect the ends of
           adjacent objects [syn: coupling]