大气老化 meaning in Chinese

atmospheric corrosion

Weathering , natural weathering
大气老化天然老化
This equipment use long arc xenon lamp as light source , imitate and strengthen weatherability , accelerate ageing to get near air ageing test results quickly , then evaluate the material weatherability
本设备是以长弧氙灯为光源，模拟和强化耐候性加速老化的试验设备，以快速获得近大气老化的试验结果，用来评价材料的耐侯性。
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。