常見(jiàn)例句雙語(yǔ)例句The interaction between two optical soliton is derived from nonlinear Schrodinger equation by variational approach.本文利用變分原理，通過(guò)非線性薛定諤方程，導(dǎo)出光纖中傳輸?shù)墓鈱W(xué)孤子相互作用。Coupled dark-bright vector solitons are considered in a birefringent fiber, and their dynamics are studied by the variational approach.針對(duì)雙折射光纖中耦合的明、暗矢量孤子，利用變分法研究了它們的動(dòng)力學(xué)特性。The negative plastic hinge line in the plate was evaluated by using variational approach , then an equation for calculating the ultimate load carrying capacity was developed.首先利用變分原理確定板的負(fù)塑性鉸線方程，繼而推導(dǎo)出極限承載力的表達(dá)式。 返回 variational approach