[請問]防水噴霧的重量與容積的關係
上禮拜在網路上買了一罐標示280ml的防水噴罐，覺得輕得嚇人，拿去秤發現只有252克，詢問店家回答我：您好，瓶身沒有寫280克，是寫280ml，這是容積不是重量喔，防水密度不同，當然重量不同，謝謝^^
這是真的假的，這重量還包含了罐重與噴氣瓦斯，這樣防水藥劑還有280ml，怎麼會這麼輕！？
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