| 還是這個？ |
| 送交者: 超級大懶貓 2010月12月08日16:19:35 於 [世界軍事論壇] 發送悄悄話 |
| 回 答: 是這個麼？ 由 超級大懶貓 於 2010-12-08 16:12:44 |
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http://www.zojirushi.com/ourproducts/how_and_chart/comparison_pdf/Zojirushi%20Lunch%20Jar%20Chart.pdf
Vacuum Insulation: How does it keep food hot? The air between two thin layers of stainless steel that make up the outer container is removed to create a vacuum. Because there is no air, the temperature on the other side of the wall does not transfer over, keeping foods hot or cold for hours. |
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