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Mannesmann | piercer
 piercer
eng.geol. 钻孔器;
met. 穿孔机; 自动轧管机; 芯棒; 冲头; 冲床; 钻孔机
oil 冲孔; 冲压机

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Mannesmann: 44 phrases in 6 subjects
Commerce1
Company name3
Mechanics1
Metallurgy26
Steel production5
Technology8