air chimney

基本解釋

An air tank and a chimney that was removed to a circumference are left.
機(jī)車的周圍放在空氣筒，煙筒等等。
dict.cn
For example, the central tower will serve as a kind of chimney that keeps air flowing to provide natural ventilation.
例如，塔中心設(shè)計成一種煙囪的樣式，保證空氣流通，用以供給自然通風(fēng)。
The design of chimney and air current, the gate of fire way, the laying of fire box and adjustment of the flame height, were the key factors of fire way.
煙囪設(shè)計、氣流控制、火路通口、灶塘鋪設(shè)及吊火高度，為火路關(guān)鍵技術(shù)。

Noting that warm air moved up a chimney (which were another Medieval innovation), larger Medieval kitchens had fans installed in the chimney to automatically turn spits by use of a gearing system.
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His scheme replaces the chimney with a tornado-like vortex of spinning air, which could extend several kilometres into the atmosphere.
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