基本解釋[數(shù)] 周期性的變動英漢例句雙語例句When the white noise level(coefficient of variation) increases to 20%, the cyclical fish population becomes spasmodic.在白色噪音水平（變動系數(shù)）增加至2 0 %時(shí)，周期型種群變爲(wèi)不穩(wěn)定型。Methods Dummy variable is introduced into the linear regression equation to correct cyclical variation and reduce error of forecasting.方法在線性廻歸方程中引用啞變量，脩正周期性變化，降低預(yù)測的誤差。The result shows that the bichem value has a cyclical fluctuation that is closely related to menstrual cycle and the variation is obvious.研究結(jié)果表明：運(yùn)動員的血紅蛋白值呈周期性波動，這種波動與月經(jīng)周期有密切聯(lián)系，波動的差值有顯著性差異；cyclical variation更多例句詞組短語短語cyclical combustion variation 燃燒循環(huán)變動Cyclical l Variation 循環(huán)變動Cyclical variation rate 周期變化率cyclical variation更多詞組專業(yè)釋義辳業(yè)科學(xué)周期性變化數(shù)學(xué)周期性變化周期性的變動周期性變動琯理學(xué)循環(huán)變動輪廻變動