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Gold electrodeposit as top coating of artificial jewelry made of copper and copper alloy tarnished because of copper diffusion to gold top deposit.
中文意思:
铜和铜合金饰品表面需镀金,由于铜扩散至镀金层表面,引起金层变色。


以下为相关句子列表(点击查看,可以看对应的解释):
1 Gold and Silver are the result of uniting all single, dual, tri and quad notes within the Language of Light into a single golden or silver ray. 已记 看解释
2 Gold and silver scarabs have also been found, but are much rarer, because of grave robbers. 已记 看解释
3 Gold demand in China climbed by 3 per cent year-on-year to 62.9 tons in the third quarter of this year amid a tumble of 3 per cent in global gold consumption. 已记 看解释
4 Gold does not belong to the miser,but the miser to gold. 已记 看解释
5 Gold doesn't belong to the miser,but the miser to gold. 已记 看解释
6 Gold electrodeposit as top coating of artificial jewelry made of copper and copper alloy tarnished because of copper diffusion to gold top deposit. 已记 看解释
7 Gold extraction from ground whole-of-ore by agitated leach ranged from 97% up to 99% depending on grind size and cyanide concentration. 已记 看解释
8 Gold feather: The hawk king on the Wind-hill of the legend gives jeacn's present, this feather can be given and brought the best good luck to jeacn. 已记 看解释
9 Gold go in at any gate except heaven's. 已记 看解释
10 Gold got a boost from the weaker tone of the dollar, and the precious metal rose to within striking distance of the 24?-year high of $540.90 recorded in December. 已记 看解释
11 Gold has long been a safe haven for investors. 已记 看解释
 
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