But PCBs are persistent chemicals, and their effects are felt even today.

但PCBs是惰性工品，即便是今天，它们的影响依然存在。

Two of them seem particularly resistant to the effects of PCBs.

其中的两种变异似乎具有特殊抵抗PCB的作用。

And DDT and PCBs two of the most poisonous and long-lasting substances known continue to threaten aquatic wildlife.

滴滴涕和多氯联苯是已知的两种毒性和持久性最强的物质，它们继续威胁水中的野生动物。

PCBs do their damage by binding to a protein called the aryl hydrocarbon receptor, or AHR, thus stopping it working properly.

PCB的危害来源于它们结合一种称为芳香烃受体（AHR）的蛋白质，从而停止该类蛋白的正常运转。

For this, engineers had another innovation: printed circuit boards, or PCBs.

为此，工程师们进行了另一项创新：印刷电路或 PCB。

Printed circuit boards or PCBs are everywhere  and inside this mouse, you can find four of them.

印刷电路或 PCB 无处不在，在这款鼠标中，您可以找到其中的四个。

After having spilled PCBs and other pollutants into the river in the 1970s, many industries simply moved leaving the contaminated sites behind.

在上世纪70年代，多氯联苯和其他污染物排入河流后，许多行业搬离了这些受污染的地方。

This is because new bioleaching methods are being developed to get at some of the non-precious, though still valuable, metals in PCBs.

这是因为正在开发新的生物浸出方法，以去除 PCB 中一些不贵重但仍然有价值的金属。

Once these pampered bacteria are mixed with crushed PCBs in a reaction chamber they digest many of the metals within a day or two.

一旦这些被精心培育的细菌与粉碎的 PCB 在反应室中混合，它们就会在一两天内许多金属。

Estimates vary, but a tonne of PCBs could contain 150 grams or more of pure gold, which, because it does not tarnish, produces stable electrical connections.

估计数字各不相同， 但一吨 PCB 可能含有 150 克或更多的纯金，由于金不会失去光泽，因此可以产生稳定的电连接。

So, these are ducts (ph) and PCBs, heavy metals like lead and arsenic that have been in the soil, in sediment at these sites for decades.

因此，这些是管道 (ph) 和多氯联苯，重金属如铅和砷，几十年来一直存在于这些地点的土壤和沉积物中。

Typically, the PCBs are removed and crushed before being either burned in a furnace to melt out metals or treated with chemical solvents, like strong acids.

通常情况下， PCB 会被取出并粉碎， 然后放入熔炉中燃烧以熔金属，或者用强酸等溶剂进行处理。

The Cambridge plant has the capacity to process 1,000 tonnes of PCBs a year, although plans are already being discussed to build a much bigger one.

剑桥工厂每年可加工 1,000 吨 PCB，尽管已经在讨论建造一个更大的工厂的计划。

Also, take a look at our channel page where we cover other topics such as how touchscreens work, how PCBs work, or how cameras in your smartphone work.

此外， 请查看我们的频道页面， 我们在其中介绍了其他主题，例如触摸屏的工作原理、PCB 的工作原理或智能手机中的摄像头的工作原理。

Bioscope was set up as a separate entity by N2S, a sister company that specialises in recycling IT equipment, and which supplies Bioscope with the crushed PCBs.

Bioscope 由 N2S 成立，N2S 是一家专门回收 IT 设备的姊妹公司，为 Bioscope 提供压碎的 PCB。

By using PCBs and ICs together, one could achieve exactly the same functional circuit as that made from discrete components, but with far fewer individual components and tangled wires.

通过将 PCB 和 IC 一起使用，可以实现与分立元件完全相同的功能电路，但单个元件和缠绕的电线要少得多。

A different sort of pay dirt, however, offers the prospect of a much greater return for urban miners: the printed circuit boards (PCBs) found in rapidly growing mountains of electronic waste.

然而，另一种财富却为城市矿工带来了更大回报：在迅速增长的电子垃圾山中找到的印刷电路（PCB）。

The process is capable of recovering almost all the gold, silver, copper and palladium from the crushed PCBs, although the exact amount depends on the type of circuits being recycled.

该工艺能够从破碎的 PCB 中回收几乎所有的金、银、铜和钯，但具体数量取决于被回收的电路类型。