例句
Direct counting guarantees the quantitive accuracy you need for important experiments and radiochemical purity measurements.
直接计数保证了重要的实验和放射化学纯度测量需要的定量精度。
An introduction to environmental level of transuranium elements and a review of the recent advance in radiochemical analyses of them are made.
本文介绍了超铀元素的环境水平，对它们的放射化学分析的进展进行了述评。