1. He reveals circuit boards usually sell for 30 yuan a kilogram in Beijing but become worth 50 yuan once they reach Guangdong.
2. Yates was among the world's first copper foil firms to produce circuit boards.
3. It's heaped with circuit boards, silicon chips and various electronic components that appear bizarre to laypeople.
4. The one in Yingkou will be involved in manufacturing electronics including printing circuit boards.
5. Authorities said some of the objects looked like circuit boards or had wires hanging from them.
6. One held sodium permanganate, which is used to make circuit boards.
7. The statement said the vehicles contain defects in their rear lamps'internal circuit boards, which may cause the cars'lights to fail.
8. circuit boards什么意思
8. About 60 kg of copper can be extracted from a ton of circuit boards.
9. Unskilled workers heated circuit boards over coal fires to extract the minerals, or dipped silicon chips in acid baths to remove the protective coating.