Integrated application of technologies enables the system to become an easy to operate, normative network-assisted teaching system with good usability, maintainability, scalability and manageability.

各种技术的综合应用使网络教学系统简单易用，规范标准，具有良好的可用性、可维护性、可扩展性和可管理性。

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You'll start with the policy before constructing the form; this means you will decide your security and usability goals before writing HTML, always a good thing.

在构建表单之前，首先处理策略；这意味着您将在编写HTML之前确定您的安全性和可用性目标，这始终是一种可取的做法。

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You have new usability, legal, policy, and data quality issues to deal with, and that's just dealing with users who come in good faith.

您需要处理新的可用性、法律、政策和数据质量问题，并且这仅限于处理信任的用户。

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Meanwhile, an engineer who is concerned with getting every passenger a really good network signal can see if the weak signals are propagating through the airplane with enough power to provide a good usability experience.

CNN: Boeing uses potatoes for in-flight wireless test