基于保护位的自主型访问控制，很难实现基于单个用户制定全局安全策略。
Finally, discrete access control based on protection bits can't provide global secure policy based on individual user.
完善的安全保护，自主设计的控制系统，丰富的选配组合，可充分满足客户定制需求。
Perfect safety protection, independently-designed control system and abundant matching combinations may fully meet the customized demands of customer.
完善的安全保护，自主设计的控制系统，丰富的选配组合，可充分满足客户定制需求。
Perfect safety protection, independently-designed control system and abundant matching combinations may fully meet the customized demands of customer.
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