There has also been a surprise drop in the fees charged by smelters and refiners to process dry feedstock, or copper concentrate as it is known, into anodes and eventually cathodes.
冶炼商和精炼商将干原料(即铜精矿)加工为阳极铜、以及最终加工为阴极铜收取的费用也令人意外地出现了下降。
The coupling action and synchronization of the current oscillation for two copper wire anodes in phosphoric acid solution are studied.
薄膜结构与风环境之间存在着较强的流固耦合作用，并且这种耦合作用往往对薄膜结构的振动起控制作用。
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