Because of rotation and revolution of the earth, solarultravioletradiation intensity varies in diurnal and annual periodic.
由于地球自转和公转的原因，太阳紫外线辐射强度呈现出以一年和一天为周期的规律性变化。
2
The influence of all the factors affecting solarultravioletradiation should be considered comprehensively as analysing the variation trends of solar ult...
在分析太阳紫外辐射的变化趋势时，应当全面考虑各个因子的影响。
3
Avoid prolonged exposure under sunlight. Loose clothing, suitable hats and UV-absorbing sunglasses can reduce the chance of sunburn by solarultravioletradiation.