To guarantee the system safe, this thesis designed a new kind of Identity certification method based on the mode of keywords and public-key certification.

为了保证本系统的安全性，本论文结合基于口令和公钥的认证模式，设计了一种新型的身份认证方法。

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The monitoring method and evaluation indicators of environmental evaluation factors are put forward, and it provides the reference for the site selection, environmental evaluation and certification.

给出了环境评价因子的监测方法和评价指标，对无公害蔬菜种植生产基地的选址、环境评价、认证提供了参考。

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Meanwhile, Analysis the realize method of user safety certification mechanism on intelligent pattern design system.

同时分析和讨论了智能图案创作系统用户安全认证机制的实现方法。

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