The silver-rich lead came from the continuous crystallizer is then subjected to vacuum distillation, yielding silver bullion of over 80% Ag.

连续结晶器得到的富银铅采用真空蒸馏获得含银>80%的粗银。

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This paper introduces mainly to a process of treating Sb-rich lead anode slime by vacumm volatilization. The factors influencing volatilization rate of antimony are probed in.

主要介绍了利用真空挥发对高锑铅阳极泥进行处理的新工艺试验研究结果，并对影响挥发率的各种因素进行了讨论。

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Utrecht University sociologist Arnout van de Rijt was the lead author on the 2018 paper showing the rich get richer.

乌得勒支大学社会学家 Arnout van de Rijt 是2018年一篇论文的主要作者，该论文显示富人正变得更富。

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India and China have been vocal in demanding that rich, developed countries, such as the United States, take the lead in cutting carbon emissions, which exceed theirs on a per capita basis.

VOA: standard.2009.11.27

The male brains, especially nerve cell rich parts of the brain associated with thinking and remembering, seemed to have sustained more long term damage from high lead levels than the brains of the young women.

VOA: standard.2009.12.19

To put it another way, the rich lead the decline in fertility, producing a short-term increase in income inequality as they capture the benefits of demographic change first.

ECONOMIST: Free exchange

The best way to do that is for rich countries to lead by example, by changing the terms of their own bond contracts.

ECONOMIST: When lenders should be losers

This is the real test of global economic co-operation for the rich countries: to lead by example.

ECONOMIST: Striving for co-operation | The