The source of the system is determined through researching the interference light (Arc light) characteristics and the characteristics of the laser light source and clear welding images are obtained.

通过研究焊缝跟踪干扰光（电弧光）的特点和激光光源的特点，确定了该系统的光源，获取了清晰的焊缝图像。

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The kilometre-wide separation of the component satellites of Terrestrial Planet Finder should allow it to see planets in distant solar systems a problem akin to looking for moths flying around a football-stadium arc light that is several hundred kilometres away.

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The arc of refracted light was relevant for two men and two parties.

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This negative is illuminated from the front by an arc lamp, and the light from this lamp passes through the transparent regions of the liquid-crystal layer to the middle layer.

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