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11. | a furnace scanning periscope |
| 熔炉观测镜 |
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12. | vertical furnace |
| 竖式熔炉 |
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13. | quartz glass melting furnace |
| 石英玻璃熔炉 |
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14. | heat load of furnace |
| 熔炉热负荷 |
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15. | resistance type furnace |
| 电阻式熔炉 |
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16. | recuperative furnace |
| 换热式熔炉 |
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17. | cold top furnace |
| 冷炉顶熔炉 |
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18. | nozzle for furnace burners |
| 熔炉燃烧器喷嘴 |
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19. | day tank furnace |
| 日槽熔炉 |
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20. | inclinable resistance furnace |
| 倾斜式电阻熔炉 |
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