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图 1 平版印刷过程示意图
Figure 1. Schematic diagram of the lithographic process
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图 2 平版印刷机示意图及外部接收罩设计参数
Figure 2. Schematic diagram of lithographic printing machine and design parameters of external receiving hood
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图 3 计算模型及不同集气罩设计参数
Figure 3. Calculation model and design parameters of different gas collecting hood
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图 4 静风条件下甲苯浓度分布趋势
Figure 4. Trend of toluene concentration distribution under windless conditions
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图 5 外部接收罩不同风量下甲苯浓度场及气流速度场
Figure 5. Toluene concentration field and air velocity field for external receiving hood at different air volumes
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图 6 外部接收罩收集效率与收集风量的关系
Figure 6. Relationship between collection efficiency of external receiving hood and collected air volume
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图 7 半密闭罩收集风量为320 m3·h−1时甲苯浓度场及气流速度场
Figure 7. Toluene concentration field and air velocity field for semi-closed hood at air volume of 320 m3·h−1
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图 8 密闭罩收集风量为160 m3·h−1时甲苯浓度场及气流速度场
Figure 8. Toluene concentration field and air velocity field for closed hood at air volume of 160 m3·h−1
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图 9 不同集气罩下收集效率与收集风量的关系
Figure 9. Relationship between collection efficiency and collected air volume for different air hoods
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图 10 不同高度挡板优化示意图
Figure 10. Schematic diagram of baffle optimization with different heights
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图 11 d=300 mm时甲苯浓度场及气流速度场
Figure 11. Toluene concentration field and air velocity field at d=300 mm
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图 12 不同挡板高度下的收集效率
Figure 12. Collection efficiency at different baffle heights
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图 13 不同数量的格栅优化示意图
Figure 13. Schematic diagram of grid optimization with different numbers
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图 14 不同格栅数量下的收集效率
Figure 14. Collection efficiency at the different number of grids
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图 15 外部接收罩结构优化示意图
Figure 15. Schematic diagram of structural optimization of external receiving hood
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图 16 外部接收罩优化后收集风量为640 m3·h−1时甲苯浓度场及气流速度场
Figure 16. Toluene concentration field and air velocity field for the optimized external receiving hood at air volume of 640 m3·h−1
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