The BE-4 (Blue Engine 4) is an oxygen-rich liquefied-methane-fueled staged-combustion rocket engine produced by Blue Origin. The BE-4 was developed with...
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positive integer can be written as the sum of at most four squares. Four is one of four all-Harshad numbers. Each natural number divisible by 4 is a difference...
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4:4:4 may refer to: Digital images or video in which all color components have the same sampling rate, thus not using chroma subsampling Another name...
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4/4 may refer to: 4 4 time April 4 4/4 (EP series) Four by four (disambiguation) This disambiguation page lists articles associated with the same number...
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in 1915, numbered 110 to 113. They proved to be quite unstable; after that year, they were rebuilt to 4-4-2 "Atlantic" locomotives, classified as P7sa...
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four-wheel trailing truck. While it would be possible to make an articulated locomotive of this arrangement, the only 4-4-4-4s ever built were duplex locomotives—with...
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The Beriev Be-4 (originally designated KOR-2) was a reconnaissance flying boat built to operate from Soviet warships during World War II. In 1939, Beriev...
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BE-4 or Blue Engine 4 is a rocket engine under development by Blue Origin. Be-4 or Be4 may also refer to: Beriev Be-4, a Soviet reconnaissance flying...
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Look up 4° or 4º in Wiktionary, the free dictionary. 4° may refer to: 4°, or Quarto a book or pamphlet produced from full 'blanksheets', each of which...
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coming in January 2016". Steven Wilson. November 5, 2015. "ultratop.be - Steven Wilson - 4½". Ultratop. Hung Medien. Retrieved 30 January 2016. "Steven Wilson...
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