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单词 power loading
释义

power loadingn.

Brit. /ˈpaʊə ˌləʊdɪŋ/, U.S. /ˈpaʊ(ə)r ˌloʊdɪŋ/
Origin: Formed within English, by compounding. Etymons: power n.1, loading n.
Etymology: < power n.1+ loading n.
1. Chiefly Mining. A mechanized method for loading materials on to a conveyor belt, esp. coal at the coalface. Cf. power loader n. at power n.1 Compounds 3.
ΘΚΠ
society > occupation and work > industry > mining > [noun] > other specific mining processes > in coal-mining
outstroke1747
holing1841
coal-cutting1842
patio1845
sumping1849
bottoming1856
salting1856
patio process1862
spragging1865
yardage1877
booming1880
brushing1883
filling1883
sounding1883
yard-work1883
blanketing1884
goafing1888
freezing process1889
power loading1901
bashing1905
rock dusting1915
mucking1918
solid stowing1929
stone-dusting1930
roof bolting1949
rock bolting1955
1901 Anaconda (Montana) Standard 15 Apr. 10/2 An entirely new improvement was added here that is not at any other mill in the state, and that is the power loading to wagons from the sorters.
1938 Lima (Ohio) News 22 Sept. 3/2 It's a long step from..manual loading and mules for hauling the cars to the present big electrically fired blasts, power loading and electric haulage.
1956 F. S. Atkinson in D. L. Linton Sheffield 269 With thinner seams power-loading presents a difficult problem and progress has been slower.
1988 Econ. Jrnl. 98 1103 Proportion of saleable output produced from production faces with powerloading machines.
1997 Air Cargo Rep. (Nexis) 14 Aug. Lucas officials are especially proud of this system, which incorporates a power loading system that makes it possible for one person to load the cargo hold.
2. The weight of an aircraft (when fully loaded) divided by the total engine power.
ΘΚΠ
society > travel > air or space travel > a means of conveyance through the air > aeroplane > qualities and parameters of aircraft > [noun] > laden weight divided by engine power
power loading1920
1920 H. Woodhouse Textbk. Appl. Aeronaut. Engin. iii. 136 The lift loading of the machine per sq. ft. equals 8·3 lbs., and the power loading, 12·1 lbs. per h.p.
1931 Appleton (Wisconsin) Post-Crescent 17 June 33 It will carry 570 gallons of gasoline at the take-off, and will have a total weight of about 6000 pounds. The power loading however, will be only approximately 10 pounds per horse-power.
1966 D. Stinton Anat. Aeroplane vii. 118 When power loading is used as a measure of merit for comparing different aircraft (Wo/P) lb/hp is used, where Wo is the all-up-weight on take-off and P the sea level horsepower.
1992 Flight Internat. (Nexis) 5 Feb. Power loading is defined as aircraft weight divided by installed power—a more efficient aircraft requiring less powerful engines to hover at a given weight.
This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).
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n.1901
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