... 光外差技术Light poor technology 光外差特性Optical characteristics of poor 干涉测量Interferometry ...
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light poor technology
弱光技术
以上为机器翻译结果，长、整句建议使用 人工翻译 。
This is the story of how one man combined LEDs with solar energy technology to bring high-quality, low-cost electric light to poor people around the world.
VOA: standard.2009.12.13
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