研制了高品位矿石金标准物质，并已获国家技术质量监督局批准为国家一级标准物质。
The gold standard material of high grade ore was prepared in this Institute. It was approved and assigned as the first class standard material by the state Supervision Bureau of Technical Quality.
研制了高品位矿石金标准物质，并已获国家技术质量监督局批准为国家一级标准物质。
The gold standard material of high grade ore was prepared in this Institute. It was approved and assigned as the first class standard material by the state Supervision Bureau of Technical Quality.
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