作废 JB/T 5577.2-1991
透射式投影器--投影仰角测量方法 透射式投影器--投影仰角测量方法
发布日期:1991-07-15
实施日期:1992-07-01
分类信息
标准简介
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投影仰角透射

最后更新时间 2025-08-29