常见例句Keywords subthermal quenching;strength;ductility; 亚温淬火;强度;塑性;Keywords spring steel;austemper;graded hardening;subthermal quench;quench hot;ausform; 弹簧钢;等温淬火;分级淬火;亚温淬火;高温淬火;形变热处理; 返回 subthermal