Optical Sign to Noise Ratio 光信噪比
optical sign substitution 光学符号代换
optical warning sign 灯光警告信号
sign-optical 光学性能
The key point of this technology is the optical sign of producing and drawing.
该技术的关键是光标记的产生和提取。
Abstact:The Optical sign is a new technology of photons exchange, it can effectively overcome the elec-tronic block in photons exchange.
光标记交换是一种光子交换新技术，能有效地克服光子交换中的电子瓶颈。
And found that the rod moved upward and to the side—a sign of optical lift.
发现这个长条物体向上移动并移向旁边，这标志着光的上升力。
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