隨溫度變化的戒指

隨溫度變化的戒指

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讓物件隨溫度變色 - 熱致變色 – Terminal.Razerjaxx

zfangの科學小玩意::熱變色系列(1) 變色戒指、變色手環

戒指戒圍 – dy-jewelry.com

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