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光の除菌で、空気すっきり。 · 2020. 6. 25. · 太陽 光の作用とその効果 除菌作用 253.7 uv-c uv-b uv-a 紫 藍 青 緑 黄 橙 赤 ir-a ir-b ir-c x線 紫外線
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