求翻译：结果表明: 1980-2010年能见度变化趋势为市区表现为先恶化再好转，2010年恢复到10km以上。塘沽站表现为明显的持续恶化，2010年能见度年均值与市区接近为11.5km；蓟县表现为先下降再保持波动性的稳定，2010年能见度维持在15.6km左右。市区、塘沽和蓟县的能见度在11-1月和6-8月能见度较低。其中相对湿度和污染是影响能见度变化的主要条件。颗粒物的质量浓度和大气能见度之间存在着复杂的非线性关系, 细粒子是影响天津地区能见度变化的主要污染物。是什么意思？

The results showed that: the 1980-2010 years Visibility trends for urban performance to get worse and then better, and in 2010 restored to more than 10km. Tanggu station performance for the apparent continued deterioration of the visibility of the annual average in 2010 and the urban areas close to

Results show that: 1980 - 2010 visibility trends in the urban areas for performance improvement and deterioration, first in 2010 to more than 10 km . In Tanggu station performance continues to deteriorate, the 2010 average of the values in visibility with close to urban areas to 11.5 km in Jixian co

Results indicate that the visibility 1980-2010 changing trend for urban renewal in the form of deterioration and then improve, 2010 re