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Preparation method of bearing steel Widmannstatten structure fracture standard sample
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Method for displaying precipitation condition of ferrite along prior austenite
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Method and device for preparing curved surface metallographic sample
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Non-quenched and tempered crankshaft steel and preparation method thereof
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Method for improving rolling of H13 steel grade and H13 round steel
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Rod and wire mill cooling water control device and method
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Metallographic phase sample preparation method for steel sulfide inclusion
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Main conveying roller anti-collision device and using method thereof
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Narrow-hardenability gear steel and preparation method thereof
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Processing method of 40CrNiMo steel grade and 40CrNiMo round steel
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Grinding wheel grinding head quick replacement device and using method thereof
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Bolt jar and straightener
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Steel austenite grain boundary display method and steel austenite grain size evaluation method
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Medium carbon steel and production process thereof
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Method for machining gear part from round gear steel and gear part
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Safety protection device for high-speed wire laying machine
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Hydraulic circuit for lifting and driving large double furnace doors and operation method
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Device and method for blanking short tailings of shearing machine
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Short-length rolled piece separating device and method
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Medium-carbon non-quenched and tempered steel and preparation process thereof, and connecting rod and preparation process thereof
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