1926年，洛雷恩灶具公司(Lorain Gas Ranges)宣传其新式恒温烘箱时就将之标榜为“仆佣问题的解决之道”。
Lorain Gas Ranges advertised their new oven thermostat in 1926 as "the Answer to the Servant Problem".
2
第一步应用微波干燥原理使试样在微波炉中快速初步干燥，第二步使试样在烘箱中恒温烘至全干。
Preliminary dry samples are got quickly in microwave oven in the first step and completely dry samples are obtained in the constant temperature of oven in the second step.
3
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。
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.
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