“radioactive reference materials”的概念、定义、翻译、参考文献-科学参考

单词	radioactive reference materials
释义	radioactive reference materials Encyclopedia 工学放射性标准物质释 radioactive reference materials放射性标准物质已确定放射性活度及相关量值，用于校准活度计量器具，进行包括放射性活度、剂量、射线能量等量值传递的放射性核素物质。是标准物质中的一类。
随便看	threshold data threshold decoding threshold density threshold detection threshold detector threshold dimension threshold dosage threshold dose threshold effects threshold element threshold energy threshold field threshold for rodent control threshold frequency threshold function threshold gain threshold graph thresholding threshold intensity/threshold threshold Jacobi method threshold level threshold limit value time weight average threshold limit value-time weight average threshold limit value time weight average (TLV TWA) threshold limit value-time weight average (TLV-TWA)

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