normal frequency distribution

基本解释

The distribution frequency of fiber length and width was basically in normal;
白樺纖維長度和寬度頻率分佈基本呈正態分佈；
Results:The frequency of blood pressure presented a normal distribution and twin peak sign through the twinborn analytical method and group investigation.
結果：雙生兒分析法和群躰調查其血壓頻數分佈呈正偏態分佈和出現雙峰的現象；
Statistics histogram data processing scheme is designed. Standard deviation of frequency modulation is found out according to normal distribution characteristics.
設計了統計直方圖數據処理方案，按照正態分佈的特性找出了寄生頻率調制的標準偏差。