selenium redとは 意味・読み方・使い方

To provide a glass for lighting which does not contain lead, cadmium, selenium, chromium, arsenic and the like as detrimental components and obtain the transparent light of a prescribed color and chromaticity (from orange color to red color), and to provide a colored glass bulb using the glass and a method for manufacturing these glass and glass bulbs.例文帳に追加

鉛、カドミウム、セレン、クロム、砒素等の有害な成分を含まずに、所定の色彩色度（橙色〜赤色）の透過光が得られる照明用ガラス、およびこのガラスを用いた着色ガラスバルブ、ならびにこれらの製造方法を提供する。 - 特許庁