Procedure rules and fundamental principle of surface colouring of Cu and Cu alloy are investigated. Chemical reactive mechanism of surface colouring of Cu and Cu alloy is probed also.
研究铜及其合金的表面着色过程的规律和基本原理，对铜及其合金表面着色的化学反应机理也进行了相应的探讨。
A mixed nitric-sulphuric acids is used to recover the valuable metals ni, Cu and co from low-grade Ni-Cu sulfide tailings, the leaching rate of ni, Cu, and co is 91.
以硝酸为氧化剂、硫酸为添加剂的混酸体系用于铜镍硫化矿尾矿中镍、铜、钴等有价金属的浸出，镍、铜、钴浸出率分别可达91。
Cu in the tested soils exists mainly as organic-bound Cu, amorphous Fe oxides-bound Cu, crystalline Fe oxides -bound Cu and the residual Cu.
供试土壤铜主要以有机态铜、无定形铁态铜、晶形铁态铜和残留态铜四种形态存在。
The analysis of Auger spectra of Cu, Ni and Cu-Ni alloy also shows that the "Rigid Band Model" is not suitable for Cu-Ni system.
从铜-镍合金的俄歇谱分析可知，合金能带的刚性能带理论并不适合本研究系统。
We have to face some Cu line issues after we use Cu to replace AL, such as the reliability with Cu and low K dielectric, and post-CMP (Chemical Mechanical Polishing) Cu line voids defect.
在引入电镀铜工艺的同时我们也不得不面对一些铜线工艺所特有的缺陷，如铜线和低K值介电质可靠性问题，以及电镀铜后产生的孔洞缺陷等问题。
We have to face some Cu line issues after we use Cu to replace AL, such as the reliability with Cu and low K dielectric, and post-CMP (Chemical Mechanical Polishing) Cu line voids defect.
在引入电镀铜工艺的同时我们也不得不面对一些铜线工艺所特有的缺陷，如铜线和低K值介电质可靠性问题，以及电镀铜后产生的孔洞缺陷等问题。
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