英语词汇“return air”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

return air (a) Mining air contaminated with coal dust and gas which is pumped out of a mine; (b) air which is returned from a heated or refrigerated space for processing and recirculation.

ΚΠ

1820 Edinb. Encycl. (1830) XIV. 367/1 The circulation or return air passes up the other side of the pit.

1910 F. Haas in G. S. Rice Explosibility Coal Dust 154 The temperature and humidity of the return air of certain large mines.

1919 Trans. Amer. Soc. Heating & Ventilating Engineers 1918 24 138 For return air to a furnace we will put a little 16 by 24 in. register in the hall floor.

1957 Geogr. Rev. 47 160 In most mines the temperature of the return air remains almost constant throughout the year.

2003 Yukon News (Nexis) 10 Jan. 23 The main key to a good heating system is ample return air.

单词	return air
释义	> as lemmas return air return air (a) Mining air contaminated with coal dust and gas which is pumped out of a mine; (b) air which is returned from a heated or refrigerated space for processing and recirculation. ΚΠ 1820 Edinb. Encycl. (1830) XIV. 367/1 The circulation or return air passes up the other side of the pit. 1910 F. Haas in G. S. Rice Explosibility Coal Dust 154 The temperature and humidity of the return air of certain large mines. 1919 Trans. Amer. Soc. Heating & Ventilating Engineers 1918 24 138 For return air to a furnace we will put a little 16 by 24 in. register in the hall floor. 1957 Geogr. Rev. 47 160 In most mines the temperature of the return air remains almost constant throughout the year. 2003 Yukon News (Nexis) 10 Jan. 23 The main key to a good heating system is ample return air. extracted from returnn. < as lemmas
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