常见例句Keywords subthermal quenching;strength;ductility; 亞溫淬火;強度;塑性;Keywords spring steel;austemper;graded hardening;subthermal quench;quench hot;ausform; 彈簧鋼;等溫淬火;分級淬火;亞溫淬火;高溫淬火;形變熱処理; 返回 subthermal