求翻译：电脑弹簧机表层的显微组织和残余压应力场是提高金属材料及其弹簧的疲劳断裂和应力腐蚀断裂抗力的两个强化因素，以提高弹簧的可靠性和耐久性.是什么意思？

Computer spring surface microstructure and residual compressive stress field is to improve the fracture resistance of fatigue and stress corrosion of metal materials and their spring two strengthening factors, in order to improve the reliability and durability of the spring.

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The computer spring machine surface layer microstructure and the remnant excess pressure stress field are enhance the metal material and the spring endurance failure and the stress corrosion break resisting force two strengthened factor, enhances the spring the reliability and the durability.

Computer spring machine surface microstructure and residual compressive stress field is to improve the fatigue fracture of metallic materials and its spring and stress corrosion cracking resistance of two intensified factors to improve the reliability and durability of the spring.

正在翻译，请等待...