資料來源 : pyDict

中間隔牆; 中間間隔; 中間牆壁

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Midfeather \Mid"feath`er\, n.
   1. (Steam Boilers) A vertical water space in a fire box or
      combustion chamber.

   2. (Mining) A support for the center of a tunnel.