In other words, the FCG behavior of the given ductile irons at 20 Hz was not sensitive to the environmental effects at room temperature.

• 换言之，在高负荷频率条件下，铸态与沃斯回火球墨铸铁的疲劳裂缝成长行为对环境的敏感性较小，造成铸态与沃斯回火球墨铸铁在空气与不同室温腐蚀环境下的疲劳裂缝成长趋势一致。