[Objective]The research aimed to study occurrence rule,reason and defense measures of the thunderstorm in Liaocheng in the past 50 years. [Method]By using meteo
With the rapid economic and social development,China is in rapid development period of urbanization now.Urbanization is an inevitable trend of mankind developme
[Objective]The research aimed to study the determination of 16 kinds of OCPs in water by liquid-liquid extraction- GC.[Method] The new method for determining 16