Seven students and parent volunteers from Sky Valley Education Centre in the state of Washington said polychlorinated biphenyls (PCBs) that were made by the company gave them neurological and endocrine system conditions.

来自华盛顿州天空谷教育中心 7 名学和家长志愿者表示，该公司多氯联苯导致他们神经系统和内分泌系统出现问题。

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，多氯联苯和其他物排入河流后，许多行业搬离了这些地方。

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

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

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

但PCBs是惰性化工品，即便是今天，它们影响依然存在。

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两种毒性和持久性最强物质，它们继续威胁水中野动物。

As is the way of evolution, however, some fish species have developed resistance to PCB poisoning.

然而，某些鱼种已经PCB抗，这就是进化。

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

其中两种变异似乎具有特殊抗PCB作用。

It appears to work equally well, whether or not it has PCB passengers on board.

无论结合PCB与否，他们照样工作。

The result is fish that are more or less immune to PCB poisoning.

其结果是此鱼类或多或少对PCB免疫作用。

The PCB has their role relative to quality.

PCAOB在质量方面承担着相应职责。

Levels of certain kinds, like PCB, 16 times higher in farmed fish versus wild fish.

某些种类物，如多氯联苯（PCB），养殖鱼类含量比野鱼类高出16倍。

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结合使用，可以实现与离散组件制成功能电路完全相同效果，但使用独立组件和纠缠电线要少得多。

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 设备姊妹公司，为 Bioscope 提供压碎 PCB。

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土壤和沉积物中。

We're talking mercury, dioxin, PCBs, all the greatest hits of 20th century human industrial pollution, and plenty of raw human sewage to top it off.

我们谈论是汞、二恶英、多氯联苯，这些都是 20 世纪人类工业最大祸害，此外还有大量未经处理人类水。

And he learned that very early on, because he didn't like the way the look of the Macintosh board, the PCB was laid out.

他很早就明白了这一点，因为他不喜欢麦金塔电路板（PCB）布局设计，他希望外表和内在都能同样美观。

You've got the PCB, the casing, the plate, which kind of make up the brains and the body of the keyboard.

你有印刷电路板、外壳和底板，这些东西构成了键盘大脑和身体。

You don't need to take anything apart at the PCB level but just the key things you want to do is find all the flash storage devices, figure out how you can access them.

你不需要在印刷电路板上拆开任何东西，但你要做关键是找到所有闪存设备，找出如何访问它们。

In reflow soldering, the PCB with the placed components goes through a reflow oven.

B：在回流焊中， 带有放置元件 PCB 通过回流炉。

35. Question: What is the role of a vision system in a pick - and - place machine for PCBA? Answer: It helps to accurately identify the position and orientation of components and the PCB, ensuring precise placement.

35. 问题：视觉系统在 PCBA 贴片机中作用是什么？答： 它有助于准确识别元件和 PCB 位置和方向，确保精确放置。