Radiationfrost occurs on clear nights with little or no wind when the outgoing radiation is excessive and the air temperatures is not necessarily at the freezing point.
辐射霜出现在几乎无风的晴朗的夜晚，此时向外辐射过多，同时气温并不一定在冰点。
2
Double Circle Fence After several years of wind, frost, rain and snow, sun exposure, or bright as new, anti-ultraviolet radiation are particularly adept at.
双圈护栏网经过几年的风霜雨雪，太阳的暴晒，还是光亮如新，抗紫外线能力极强。
3
The sunshine duration is long, the temperature difference is big, the frost-free period is long, and the annual solar radiation amount is much, which is good for the growth of crops.