The utility model relates to a sub-header high-temp. hot-air furnace which is the improvement for the air heater of the existing high-temperature hot blast furnace.

分联箱式高温热风炉是对现有高温热风炉空气加热器部分的改进。

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The chemical composition, microstructure and phase ingredient of the sediment in the sub-header of WGZ410/9.8-15 boiler are measured.

对WGZ410/9.8 15锅炉下联箱的沉积块状物的化学成分、显微组织和物相组成进行了检测。

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Dons sub Josh Magennis also had a header strike the underside of the bar.

BBC: Sport - Football - Aberdeen 0-1 Hibernian

Elder came on as a second-half sub in the reserve game against Macclesfield, and was denied a goal when his header came back off the bar.

BBC: Nathan Elder makes Shrewsbury Town return