copper color

The cladding materials of the moving and fixed contacts shall be homogeneous, without exposed copper and color change;

动、定触头镀层均匀，无露铜、无变色；

By using of trioctylamine to extract and seperate from interference ions, the Cu2+-5-Br-PADAP-OP color system was applied to determine micro copper in polyolefine, Al2O3 carrier and reforming catalyst.

以正三辛胺萃取分离干扰离子，采用2-（5-溴-2-吡啶偶氮）-5-二乙氨基酚（5-Br-PADAP）-OP显色体系测定了聚烯径、氧化铝载体及重整催化剂中微量铜。

Photometric determination of trace amounts of copper by the color fading reaction of Eriochrome Blue Black R

依来络兰黑R褪色光度法测定痕量铜

Study on making technology of copper particles with golden color

黄金色铜粒子制取技术的试验研究

Her skin was a light red, almost a copper color.

她的皮肤是淡红色的，接近古铜色。

What color is copper sulphate solution?

硫酸铜溶液是什么颜色?

His face 44, what there red copper color below sunshine is smooth.

他的脸四四方方, 阳光下闪烁着紫铜色的光.

The cloud-mussed sky turned a vague copper color.

堆满乌云的天空现出一种混沌的紫铜色.

The Experiment Argument of the Metals Copper Color

金属铜颜色的实验论证

Discussion on Reason of Surface Color Change for Bright Copper Rod

光亮铜杆表面变色原因探讨