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[JB N 3989-1985] 渐开线圆柱齿轮磨齿机 制造与验收技术要求[已作废]
发布时间：1985-04-19
实施时间：1985-11-01
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[JB N 3865-1985] 剃齿机 制造与验收技术要求[已作废]
发布时间：1985-01-19
实施时间：1985-07-01
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