主要保证 meaning in English

principal security

Encryption , id verification and digital signature are major guarantees for the security of the system , only through which can an authorized user be admitted to the system
密码技术、身份认证和数字签名是系统安全的主要保证，通过上述措施，只有有权用户才能进入到系统中。
Abstract : this paper describes the main methods used to guarantee the reliability of the product in preproduction . as these methods come from the practical manufacturing activities , they can used for reference to both manufacturers and customers , and they also have some reference value to the theoretical workers
摘要：阐述了试生产中产品质量和可靠性的主要保证方法，由于这些做法来自于工厂的生产实践，所以，对承制方、订购方等各级、各类人员都有借鉴意义，同时对理论工作者也有一定的参考价值。