Meanwhile, a diurnalfluctuation in indoor radon concentration was observed.
高温低湿环境有利于氡进入温室且浓度呈日间周期性波动。
2
At cloudy day, however, the diurnalfluctuation and the vertical distribution of non-ionized ammonia concentration at different water depth have little difference.
大风天气，分子氨含量昼夜变化明显，但垂直分布差别不大。
3
The results showed that the diurnalfluctuation of temperature and humidity had similar tendency between inside and outside of greenhouse under different weather conditions.