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Munsell M50130 孟塞爾色卡 灰度計 亮光版 https://www.jyart.tw/product/munsell-m50135-%e5%ad%9f%e5%a1%9e%e7%88%be%e8%89%b2%e5%8d%a1-%e7%81%b0%e5%ba%a6%e8%a8%88-%e4%ba%ae%e5%85%89%e7%89%88/