·2,447,543篇论文数据,部分数据来源于NoteExpress
So far, 21 public metrological standards have been established, 33aboratory accreditation items and 4 type evaluation authentication of medical measuring products.
已建社会公用计量标准21项,实验室认可33项,医疗计量产品型式评价授权4项。
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