1926年，洛雷恩灶具公司(LorainGasRanges)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".
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.
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.
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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