Dec 14 2017
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As time goes on, people become more and more dissatisfied with the blandness of clothing, there is no…
michale
dahaishui
Oct 1 2017
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The laser is composed of a displacement type capacitive sensor and a nozzle body. The sensor is composed of two…
Mar 11 2017
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The first green laser pointer were argon and krypton gas in blue-green wavelengths.Laser light absorbed by melanin…