在这种环境下，基于美海军MIL-HDBK-87213A版机载光电显示器军标，实现阳光直射下清晰可见是最恰当的，因为它为开发飞行显示器、任务航空电子控制器和飞机的显示子系统提供了规范和指南。

In this environment “daylight readability” based on U.S. Navy MIL-HDBK-87213 Revision A Electronically/Optically Generated Airborne Displays is more appropriate.

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统一界面简化了整个系统架构，改进了子系统之间交互的可见性。

The uniform interface simplifies the overall system architecture and improves the visibility of the interactions between subsystems.

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可见，答疑子系统的研发是现代远程教学的重要环节，对实现高质量的网上教学具有深远意义。

So the development and research of answering subsystem is an important part in the modern remote teaching.

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