（5）预热区（preheating zone）：指火灾透过輻射、对流及传导等热传方式，将火 灾热能不断往尚未燃烧之可燃物区延伸，不断加热未燃烧之可燃物，使未引燃之可燃物...
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... 压缩带域 compression zone 氧化带域 oxidation zone; oxidizing zone 预热带域 preheating zone ...
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shale preheating zone 页岩预热段
Preheating zone power 预热区功率
Waste Gas Preheating Zone 废气预热区
preheating zone steel casing 预热带外炉皮钢板
It is divided into preheating zone, heating zone, heat preservation zone and natural cooling.
炉体分为预热区、加热区、保温区、缓冷区。
Specially designed air knife can prevent the flux from entering the preheating zone causing fire and remove excessive flux.
特制风刀设计，防止松香进入预热区产生火灼以及将多余松香排掉。
Temperature difference from top to bottom in preheating zone of tunnel kiln is the biggest obstacle for rapid firing, energy saving.
隧道窑预热带内上下温差过大是实现快速烧成、节能降耗的最大障碍。
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