资料来源 : pyDict

平衡器; 整平器; 牵引均衡横木

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Evener \E"ven*er\, n.
   1. One who, or that which makes even.

   2. In vehicles, a swinging crossbar, to the ends of which
      other crossbars, or whiffletrees, are hung, to equalize
      the draught when two or three horses are used abreast.