1. Alignment of the drill and the center of PCB standard hole in PCB location hole drilling machine is the key, which determines processing precision of the whole system.
2. Chasis Ground is the border around the SMC PCB top and bottom.
3. It can be used to metalize holes of PCB and plate on plastics.
4. PCB (polychlorinated biphenyl):Any of a class of highly stable organic compounds prepared by the reaction of chlorine with biphenyl, a two-ring compound.
5. Over the years, PCB and dioxin levels in the livers of the Hudson's tomcod rose to become "among the highest known in nature," Wirgin and his colleagues note online Feb. 17 in Science.
6. This paper classifies the testing technologies of PCB, introduces the on-line testing and on-line tester.
7. When handling the PCB or PCBA, is the operator wearing gloves if PCB solder side is touched ?
8. The PCB quality affects the capability of products directly. At present PCB quality test works are mostly completed by manual eyeballing.
9. The PCB assembly industry carries the responsibility of manufacturing a tremendously diverse array of products.
10. Current collecting, series connection and clamping can be integrated by adopting printed-circuit board (PCB) as monopolar plate in passive DMFC.
11. During operation, keep the PCB and component lead away from pollutions, such as sweat, hand touch, cream, oil etc.
12. The cable and PCB, by which the power divider was made, were both adopted in the feeding circuit net work.
13. In PCB design, if all units grounded in one point, the self-oscillation by circuit feedback along the earth wire or the power supply wire can be avoided.
14. In the production process of PCB, there are many defects such as surface smudginess, solder mask unevenness, text excursion, pad damage, track damage etc.