氧化色 meaning in English

oxidation tint
oxide colour

Very tiny , partly defect such as scratch and roller trace is allowed ; very tiny oxidation colour or oil spot is allowed
允许有轻微的、局部的划伤、辊印等缺陷；允许有轻微的氧化色（发暗）以及轻微的、局部的油迹。
The color film was made on stainless steel through chemical coloring , and the formation rate , color conversion controlling and corrosion resistance of color film were also studied
摘要对采用化学着色法在溶液中不锈钢氧化色膜的生成速度、颜色转换控制、膜层的结构及其抗蚀性能进行了试验研究。