A memory, the main circuit board from the PCB, memory particles, SPD-chip capacitance and the composition of small resistor.
一根内存，主要由PC B线路板、内存颗粒、SPD芯片和各种小电阻电容组成。
The main pollutants are benzene serial materials, polycyclic aromatic hydrocarbon, organochlorine insecticide, PCB and volatile halogenated hydrocarbon.
经过筛选确定苯系物、多环芳烃、有机氯农药、多氯联苯和挥发性卤代烃为主要污染物。
Failure of blind via is one of the main causes of an open circuit in printed circuit board(PCB).
盲孔开裂是导致印制电路板（PCB）电气断路的主要原因之一。
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