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短语
U-Eisen
冶金 U-iron; channel bar; channel beam; channel-iron; channel-beam; channel-bar; c-iron; channels
建造 C-section, channel iron
技术 channel iron; u-beam; u-channel iron
运输, 冶金 channel
U Eisen
材料科学, 机械工程 U channel iron; U section iron
U-Eisen: 2 短语, 1 学科
冶金2