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| 21. | Firstly the error back-propagation neural network( BP network) is used to substitute the time-consuming |
| 一方面用BP网络代替有限元计算提高了计算效率，另一方面用遗传算法代替常规的优化算法，使反分析结果与初值无关。 |
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| 22. | When start to operate the furnace,raise voltage alowly and gradually,never give full load at one time |
| 炉子在开始通电运行时，要逐步缓慢升压，不可一次加满负荷，否则会因冲击电流过大造成元件损坏。 |
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