单词 | mid feather |
释义 | mid feather 1. (See quots.)
1753[see feather n. 16 d]. 1797Encycl. Brit. (ed. 3) XVI. 626/1 The body of the furnace consists of two chambers, divided from each other by a brick partition called the mid-feather. 1875Knight Dict. Mech., Mid-feather, a water-bridge in a steam boiler furnace which occupies a middle position in the flue-space, the flame passing both above and below it. 1905Goodchild & Tweney Technol. & Sci. Dict. 402/1 Midfeather, (Paper Manufac.) a partition fixed in the ‘breaker’ to promote circulation of the pulp. 1930Engineering 22 Aug. 223/1 Numerous tests showed that, provided the midfeather was inserted at the fan end of the duct, completely uniform distribution of the dust was obtained. 1940Chambers's Techn. Dict. 547/1 Mid-feather (Join.), a cross-tongue. 2. Mining. A support for the centre of a tunnel (Webster 1897). |

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