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内螺纹冷挤压成形扭矩的确定方法

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School Sign:黎向锋;左敦稳;黄小龙;缪宏;史大彬;康晓军;邱佳斌.

Authorization number:ZL201210194599.8

Service Invention or Not:no

Document Type:DOCUMENTTYPE_ID139324

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