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H finned tube
H型鳍片管
把两片中间有圆弧的钢片对称地与光管焊接在一起制作而成的管子。其正面形状很像字母“H”,因而得名。又称H型肋片管、蝶片管。
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History of Chinese Pottery and Porcelain
History of Chinese Prose
History of Chinese Psychology
history of Chinese publishing
History of Chinese Ryhthmical Prose
History of Chinese Science and Technology Archives
history of Chinese sociology
history of Chinese statistical law
history of Chinese tea
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History of Ci and Qu Poetry
History of Ci Poetry
history of city water conservancy in the world
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history of Commonwealth of Dominica
history of Commonwealth of the Northern Mariana Islands
history of composite materials developments
history of contemporary Chinese aviation industry
history of Cook Islands
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history of corn cultivation in China
history of Costa Rica
history of cotton cultivation
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