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tube and pipe rolling
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tube and pipe rolling
Encyclopedia
工学
金属管材轧制
释
tube and pipe rolling
管材轧制
生产圆形和各种异形断面中空管状金属制品的轧制技术。在管材轧制中,根据管坯的变形温度不同,可分为热轧和冷轧。
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Water Saving Award of International Commission on Irrigation and Draiange
water saving devices
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water saving irrigation
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water-saving society
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water security
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