upper workings 예문

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1. Firedamp was collected in a gasometer from the upper workings and used to light the main roads underground.
2. K醖醨 still lived in poverty, and found it hard to blend in with the upper working class and the intelligentsia.
3. He priced his prints to reach a middle and even upper working-class market, and was brilliantly successful in this.
4. At 17 : 00, as it passed the upper mechanism, it got stuck and deformed the upper working gears and rods.
5. When calibrating an instrument for use, the experimenter must be familiar with both the lower and upper working range of the chosen instrument.