防变色 meaning in Chinese

anti blushing
antiblushing

Mechanism of tarnishing of silver plated wares and strategy to prevent it
镀银件腐蚀变色机理及防变色方法
Current state of research on anti - tarnishing technology for copper and its alloys
铜及其合金防变色工艺研究现状
Its effects of anti - stain treatment after dilute alkali solution immerse can be markedly increased , wood natural color lasts longer than the original ones , the color value still can reach a standard in export after aging for six months in air
稀碱液处理后再进行防变色处理，防变色效果显著提高，木材的天然色泽保持时间持久，大气老化半年后，色泽指标仍能达到外贸出口a级板标准。