... 烟囱紧急关断装置 funnel emergency shut-off device 烟囱牵索 funnel shroud 1)炉 2)炉膛 furnace ...
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... 自然通风 funnel draft 烟囱牵索 funnel stay 保险丝组件 fuse element ...
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... 烟囱口格栅盖,烟囱口铁格盖 fiddley grating 烟囱面积 funnel area 烟囱牵索 funnel guy (or shroud, or stay) ...
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