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1)  lead ingot
铅锭
1.
The physical and chemical requirements of LME lead ingots were introduced,and production technology was also introduced breifly.
简要介绍韶关冶炼厂LME铅锭的物理和化学质量要求及LME铅锭的生产工艺过程。
2.
A new method was studied for the determination of Nickel in Lead ingot in nitre acid after the main part were separated by Lead Sulphate.
方法操作简单,精密度、准确度均可满足分析要求,适用于铅锭中0 0001%~0 005%镍量的测定。
3.
This method has been applied to determine the trace impurities in a practical lead ingot with satisfactory results.
以金属离子M,2-(3,5-二溴吡啶偶氮-2-)-5-二乙氨基苯酚(3,5-diBr-PADAP)和聚乙二醇辛基苯基醚(OP)的三元络合物为显色体系,用矩阵分光光度(CPA)法研究了共存痕量铜、铋、铁3元素的测定,并对实际铅锭样品中的痕量杂质进行了测定,得到了较满意的结果。
2)  lead ingots
铅锭
1.
Determination of arsenic in lead ingots with a flow injection quartz tube atomic absorption spectrometry;
流动注射石英管原子吸收法测定铅锭中痕量砷
2.
Analysis of lead ingots by the optical emission spectrometry was studied in the paper,appropriate analytical lines and reference lines was selected and it has,done experiment for flush time,prespark time,spark time,precision and accuracy.
文章研究了光电直读发射光谱法分析铅锭,选择了合适的分析线与参比线,对冲洗时间、预激发时间、激发时间、精密度、准确度进行了试验。
3)  pig lead
铅锭,生铅
4)  lead ingot
铅锭浇铸
1.
Design and practice of an auto-control system for lead ingot;
一种铅锭浇铸自动控制系统的设计与实现
5)  Raw lead ingot mould
粗铅锭模
6)  lead pig,pig iron,ingot
铅锭<冶>
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。

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