1) high-purity lead
高纯铅
1.
Determination of trace calcium,magnesium and sodium in high-purity lead by flame atomic absorption spectrometry;
火焰原子吸收光谱法测定高纯铅中痕量钙、镁和钠
2) high purity lead
高纯铅
1.
The optimum conditions for determining trace of cobalt and nickel in high purity lead by FAAS were studied.
研究了用火焰原子吸收法分析高纯铅中痕量钴、镍的测定条件。
3) pure lead
纯铅
1.
The results demonstrated that the as-prepared lead alloy had the same crystalline structure as pure lead,while the cell parameter was decreased by adding Cd,Sb and Ag.
结果表明,自制的铅合金仍具有纯铅的晶体结构,其晶胞参数由于掺入较小原子半径的合金元素而变小,硬度却提高了70%。
4) unleaded pure tin
无铅纯锡
1.
Development of high speed electroplating additives of unleaded pure tin for pin solderability deposits;
引脚可焊性镀层无铅纯锡高速电镀添加剂的开发
5) soft lead
工业纯铅
6) improving of lead
铅的提纯
补充资料：铅-铅测年
分子式：
CAS号：
性质：238U和235U两个母体铀同位素的特性实质相同，所产生的放射性成因206,207Pb的方程可合并为（207Pb/206Pb）=[(235U/238U)]（t-1）。235U/238U现在的比值是1/137.8，利用非放射性成因‘稳定’204Pb作为参考同位素，作（207Pb/204Pb）与（206Pb/204Pb）的Pb-Pb等时线，应用方程计算年龄，式中（207Pb/204Pb）和(206Pb/204Pb)0是初始比值。
CAS号：
性质：238U和235U两个母体铀同位素的特性实质相同，所产生的放射性成因206,207Pb的方程可合并为（207Pb/206Pb）=[(235U/238U)]（t-1）。235U/238U现在的比值是1/137.8，利用非放射性成因‘稳定’204Pb作为参考同位素，作（207Pb/204Pb）与（206Pb/204Pb）的Pb-Pb等时线，应用方程计算年龄，式中（207Pb/204Pb）和(206Pb/204Pb)0是初始比值。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条