印制电路板，简称 “PCB”，也叫印制线路板。它的主要作用，是通过电路连接各种电子元器组件，实现导通与传输，是电子产品里关键的电子互连件。几乎所有电子设备都得靠它，它既能为电子元器件提供固定装配的机械支撑，实现布线、电气连接或电绝缘，又 ...

A new round of fish and soil sampling, removal and cleanup of polychlorinated biphenyls contamination will be done in early 2020 in and around Cocos Island, federal and local environmental experts ...

SCHUYLERVILLE, N.Y. >> Plans call for taking 400 Hudson River floodplain samples to determine if potentially harmful levels of PCBs exist, U.S. Environmental Protection Agency officials said Thursday.

OTSEGO, MI — Scientists were trudging across the muddy ground around Pine Creek Wednesday, sampling soils from what by next week will be lake bottom again. "They’ll be looking for mostly PCBs ...