定義

• Stress Harden.  A tempering of metal particularly in striking where areas of stress in the movement of surface metal is the greatest.  See work harden.

  excerpted with permission from

  An Encyclopedia of Coin and Medal Technology

  For Artists, Makers, Collectors and Curators

  COMPILED AND WRITTEN BY D. WAYNE JOHNSON

  Roger W. Burdette, Editor

人际关系