Stufenlinse

by http://www.fbarbian.com

translations in English

• fresnel lens

translations in Spanish

• lente de fresnel

translations in French

• lentille de fresnel

translations in Italian

• lente fresnel

translations in Portuguese

• lente fresnel

translations in Russian

• линза Френеля

translations in Chinese

• 菲涅尔透镜 - fei nie er tou jing

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