作废 QJ 281-1978
90°沉头十字槽螺栓 90°沉头十字槽螺栓
发布日期:1980-07-01
实施日期:1980-07-01
分类信息
发布单位或类别: 中国 行业标准-航天
CCS分类:
ICS分类:
标准简介
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最后更新时间 2025-08-27