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H finned tube
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H finned tube
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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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elements of centering
elements of color
elements of crime behavior
elements of crime scene
elements of crime time
elements of electromagnetic and imaging information
elements of electronic records
Elements of Euclid
elements of fold structures
Elements of Geometry
elements of geometry
Elements of International Law
Elements of Journalism
elements of laws
elements of light variation
elements of mathematics
elements of news
Elements of Psychophysics
elements of qigong practice
elements of relative orientation
elements of scene change
Elements of Social Organization
elements of textile design
Elements of the Philosophy of Right
element speciation
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