For these reasons, all fluorescent lighting ballasts which are not specifically labeled "no PCBs" must be suspected to contain PCBs.
基于这些原因，所有这些荧光灯镇流器没有明确标示“无多氯联苯”必须被怀疑含有多氯联苯。
The hole metallization of rigid-flex PCBs which including Drill, Desmear, electroless plating, Electrical plating, is a key process in the manufacturing of rigid-flex PCBs.
该孔金属化工艺是整个刚挠结合板生产制造工艺的核心，包括钻孔、去钻污、化学镀铜、电镀铜等工序。
With widely used, more and more PCBs entered environment and accumulated there. The prevention of PCBs is specially important due to its toxicity and the difficulty of degradation .
随着多氯联苯的广泛使用，越来越多的多氯联苯进入环境，并在环境中积蓄下来。由于多氯联苯的难降解性和毒性，所以防治多氯联苯的污染尤为重要。
USEPA classifies PCBs as a probable human carcinogen based on studies of laboratory animals and other evidence that suggests that PCBs might cause cancer in humans.
美国环保局归类为可能的人类多氯联苯等致癌物和人类的动物实验研究的基础上证据表明在多氯联苯可能导致癌症。
The embedded passive technology can save the real estate on the surface of the printed-circuits-boards (PCBs) by embedding the capacitors and inductors inside the PCBs.
嵌入式无源元件技术能够实现对电容、电感等无源元件在印刷线路板内部的嵌入式封装，从而节省线路板表面空间、提高封装密度。
The embedded passive technology can save the real estate on the surface of the printed-circuits-boards (PCBs) by embedding the capacitors and inductors inside the PCBs.
嵌入式无源元件技术能够实现对电容、电感等无源元件在印刷线路板内部的嵌入式封装，从而节省线路板表面空间、提高封装密度。
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