| 摘要 |
<p>An apparatus is disclosed that contains: at least one container having opposing ends and a thermally conductive lid at one end thereof; at least one bottle having a thermally conductive cap and disposed inside the container such that the cap contacts the lid so as to allow heat transfer therebetween; a device for maintaining the lid in contact with a variable heat source such that a temperature gradient is obtainable inside the bottle.</p> |
