Another cause of pitting is contact with chemical-laden moisture originating in engine exhaust, lavatories, batteries, windshield deicing compounds, and other non-natural sources.

• 另一种造成疮孔的原因是接触到来自发动机排气、厕所、电池、风挡玻璃除冰剂以及其他非天然物质的富含化学成份的湿气。