Photoelectric sensing and precision ruling are the main technical base for developing precision rotary platform with digital display.

光电传感和精密刻划技术，是开发精密数显转台的主要技术基础。

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With a new combining method of optics and electronics, a device based on a multi-beam optical sensor and a photoelectric sensing circuit was setup.

利用光学和电子学结合的方法，建立了基于多光束光学传感器和光电检测电路的检测薄膜特性装置。

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However, the importance and inherent frangibility of the space-based photoelectric imaging and re-mote sensing device make problem of safety and protection more serious.

然而，天基光电成像遥感设备在军事中的重要性和固有的脆弱性，使其安全与防护问题日益突出。

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