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针对美国国家标准协会（ＮＳＡ）公司已被美国信息处理公司（ＩＨＳ）合并，ＩＨＳ公司的美军标产品将替代ＮＡＳ美军标产品的情况，介绍了美国军用标准ＩＨＳ平片的检索方法。
In response to the merger of the National Institute of Standards and Technology (NSA) company with the US Information Processing Corporation (IHS) and the replacement of the US military product of IHS with that of the US military standard IHS, the article introduces the retrieval method of US military standard IHS plain film.