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发表于 2025-3-19 02:51:17 | 显示全部楼层 |阅读模式
For natural gas, pipelines are constructed of carbon steel and vary in size from 2 to 60 inches (fifty one to 1,524 mm) in diameter, relying on the type of pipeline. Thus, SS Great Western (1,340 GRT) and SS Nice Japanese (18,915 GRT) had been constructed in 1838 and 1858 respectively. SS Nice Britain 1845 Preserved (Museum) Bristol, UK First iron-hulled ocean liner; now a museum. The document set by SS Nice Eastern was not beaten till 43 years later in 1901 when RMS Celtic (20,904 GT) was accomplished. At first of the twentieth century, Cunard Line's RMS Lusitania and RMS Mauretania reached a velocity of 27 knots. Since their starting in the nineteenth century, ocean liners needed to satisfy rising demands. Till the start of the twentieth century, they didn't always have bedsheets and meals. The tonnage then grew profoundly: the first liners to have a tonnage that exceeded 20,000 have been the large Four of the White Star Line. The rudimentary steam boilers gave rise to extra elaborate machineries and the paddlewheel steadily disappeared, changed first by one screw then by two screws. There were many British shipping firms; two were significantly distinguished: Cunard Line and White Star Line.
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