PCBs (Polychlorinated Biphenyls).
多氯联苯(聚氯化联苯)。
Known examples are Dioxins and PCBs (polychlorinated biphenyls).
已知实例为二恶英和多氯联苯。
Many Marine species are overfished, and some have high levels of mercury and PCBs.
过度捕捞的很多海洋物种中，有许多含有高浓度的汞和多氯联苯。
Another probable source of the PCBs is one of the world's largest ships' graveyards.
另一个可能的氯联苯污染源是世界上最大船只墓地，努瓦迪布（毛里塔尼亚西北部港市）南部。
They include pesticides such as DDT and chemicals called PCBs used in electrical goods.
这其中包括了如ddt农药和电子产品中使用的一种称为“多氯联苯”的化学物质。
多氯联苯是天然物质？
This can remove up to 50% of the PCBs.
这可以消除多达50%的多氯联苯。
When and why did production of PCBs stop?
什么时候，为什么停止生产多氯联苯？
How do mercury and PCBs end up in fish and the food supply?
汞和多氯联苯最终如何存在于鱼类和粮食中的呢？
All parts, PCBs or devices that have been replaced belong to Skyray.
所有被替换的零件、电路板或设备都将成为Skyray的财产。
The stress in question is pollution by polychlorinated biphenyls (PCBs).
环境压力来自多氯联苯(PCB)污染。
Conclusion: PCBs in the hair of infants with skin hemangioma is much higher.
结论：多氯联苯化合物在皮肤血管瘤患儿头发中的水平增高。
UL has more than 50 years of experience in the field of PCBs conformity assessment.
UL在印刷电路板合格评定领域有着50多年的历史。
The existing issues in traditional parallel testing methods for PCBs interconnect faults are pointed out.
文章分析了现有的电气网络互连故障的并行测试方法，指出它们在故障诊断上的局限性。
With the chlorine increased from 4 to 7, PCBs homologue concentrations decreased in all the four samples.
随着取代氯原子数的增加，同族体的含量逐渐降低。
High levels of PCBs and other pollutants have dramatically affected the polar bear's ability to reproduce.
高浓度的PCB和其他污染物严重影响了北极熊的繁殖能力。
Flat PCB holding trays are designed to hold up to 25 PCBs for storage and transport at manual workstations.
平面印刷电路板托盘的设计，在人工操作平台上可容纳25个印刷电路板。
A sheared double-toothed roll and a hammer crusher were used to achieve the liberation of metals from PCBs.
提出了用剪切破碎机和锤式破碎机实现电路板的粗碎和选择性破碎。
In this paper, the different physical methods of discarded PCBs reutilization were elucidated and analyzed.
对国内外资源化处理废弃电路板的物理方法进行了阐述、分析和比较。
As a vertical interconnect channel, through-hole plays an important role in multi-layer PCBs and IC packages.
通孔作为垂直互联的主要实现方式在多层印制电路板和芯片封装中起着至关重要的作用。
Widely used in plastics and electrical insulation, PCBs -polychlorinated biphenyls - take decades to break down.
大量使用在塑胶，及电气绝缘体上的多氯联苯，需要几十年才会被分解。
Normal operations of Army bases generate huge amounts of fuel spills, solvents and polychlorinated biphenyls (PCBs).
在陆军基地所进行的正常运作会导致大量的油料溢出，并产生大量的溶剂与聚氯联苯。
Presented is a novel Fly Back Transformer formed with multilayer plane spiral coils and connecting PCBs and its assembly technology.
介绍一种由多层平面螺旋线圈和印刷线路连接板构成绕组的新颖回扫变压器。
In fact, studies have shown that more than 95 percent of Americans older than 12 still have detectable levels of PCBs in their blood.
事实上，研究表明超过95%的12岁以上的美国人血液中仍然检测出含有多氯联苯。
Thompson's rigorous quality control procedures test all raw materials to ensure no chemical pollutants such as PCBs, mercury and lead.
汤普森的严格的质量控制程序测试所有原材料，以确保没有化学污染物，如多氯联苯，汞和铅。
At the same time, plastics absorb pollutants including PCBs (polychlorinated biphenyls) and pesticides, bringing poisons into the food chain.
同时塑料还吸收了污染物pcbs(多氯联苯)和各种农药，从而给食物链中带来有毒物质。
12 kinds of dioxin-like polychlorinated biphenyls(PCBs)in soil were determined by accelerated solvent extraction(ASE)and gas chromatography method.
采用加速溶剂萃取（ASE）—气相色谱法测定土壤中的12种类二恶英多氯联苯。
The long half-lives of PCDDs, PCDFs and “dioxin-like” PCBs mean that each daily ingestion has a small or even a negligible effect on overall intake.
PCDF和“类二恶英”PCB的半衰期很长，意味着每天的摄入对总摄入量的影响很小甚至可忽略不计。
The long half-lives of PCDDs, PCDFs and “dioxin-like” PCBs mean that each daily ingestion has a small or even a negligible effect on overall intake.
PCDF和“类二恶英”PCB的半衰期很长，意味着每天的摄入对总摄入量的影响很小甚至可忽略不计。
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