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。

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First of all, the electrode is not allowed in the construction site overnight deposit, should be kept recycling to low temperature in the oven temperature.

首先，焊条不允许在施工现场隔夜存放，应回收至低温烘箱中恒温保存。

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The reason of low recovery rate of tar in coke product was analyzed; the recovery rate of tar was increased by decreasing the oven-roof temperature and adjusting operating conditions.

分析了焦炭生产中焦油回收率低的原因，通过降低炉顶温度和调整工艺操作，提高了焦油的回收率。

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