Twelve icons in outline style - no background : lightbulb, molecule, beaker, magnifying glass, key, eco lightbulb, bomb, paper plane, notes, coffee cup, candle and radio.
各種iconset
beaker、bomb、bulb、candle、chemistry、coffee cup、icon、iconset、key、light、magnifying glass、molecule、notes、package、paper、paper plane、radio
燒杯、炸彈、燈泡、蠟燭、化學、咖啡杯、圖標、圖標集、鍵、光、放大鏡、分子、筆記、包、紙、紙飛機、無線電
資料來源：openclipart ( https://openclipart.org/ )