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

但PCBs是惰性化品，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。

PCBWay can quickly manufacture your PCBs with competitive prices and impeccable standards.

PCBWay 可以以有竞争力的价格和无可挑剔的标准快速制造您的 PCB。

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，从而停止该蛋白的正常运转。

PCBWay also offers Turnkey PCB Assembly services to assist you in populating your PCBs.

PCBWay 还提供交钥匙 PCB 组装服务，以帮助您填充 PCB。

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

为，师们进行了另一项创新：印刷电路板或 PCB。

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。

PCBWay can quickly  manufacture your PCBs with competitive prices and impeccable standards.

PCBWay 可以以有竞争力的价格和无可挑剔的标准快速制造您的 PCB。

But most PCBs stay around 2 to 10.

但大多数 PCB 保持在 2 到 10 左右。

Older designs of PCBs used components that took up much more space both on the board, and through the board.

旧式 PCB 设计使用的元件在电路板上和电路板内部占用了更多空间。

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

印刷电路板或 PCB 无处不在，在这款鼠标中，您可以找到其中的四个。

Question: What is the common material for PCBs in PCBA? Answer: FR - 4 (Flame Retardant 4) is a very common material for PCBs.

8. 问题：PCBA中PCB的常用材料是什么？答： FR - 4（阻燃 4）是 PCB 中非常常见的材料。

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消化掉许多金属。

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，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。

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，因可以产生稳定的电连接。

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化金属，或者用强酸等化溶剂进行处理。

Or, for another example, some newer smartphones stack PCBs on top of one another in order to fit more space for a larger battery and more cameras.

或者，再举一个例子，一些较新的智能手机将 PCB 堆叠在一起，以便为更大的电池和更多的摄像头提供更多空间。

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.

剑桥厂每年可加 1,000 吨 PCB，尽管已在讨论建造一个更大的厂的计划。