Book pages artificially yellowed (by leaving them in the sun, or very carefully baking them in an oven at a low temperature) make terrific faux-antique wall decoration.
书也可以人工变黄(通过放在太阳下晒,放入烤箱低温非常小心地烘烤)来做成极好的仿古董墙装饰。
"You tend to place it in a large metal pot over a camping stove, keeping it at a low temperature, " he said. "You need to monitor it constantly because if it gets too hot, it could catch fire.
“你一般要在野营用的火炉上放一个金属大罐子,还要使它保持低温,”他说,“你要不停地看着它,因为如果过热,它会着火。”
Research purposes: at a low temperature, the mechanical properties of rail steel get worse and brittle (failures) can happen more easily.
研究目的:钢轨钢材在低温下力学性能变差,容易发生脆性破坏,这直接威胁着铁路运输的安全。
We use here a low temperature fired clay, which is very easy to work with.
VOA: special.2009.09.09
Let's say we start from some V1 and p1 here, so high pressure, small volume and we end up with a high volume low pressure, under constant temperature condition.
例如我们要从压强比较高,体积比较小V1,p1出发,到达低压强,大体积的末态,过程中温度不变。
An extremely low body temperature can cause the heart to beat so slowly that a pulse may be difficult to find.
VOA: special.2009.12.30
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