常見例句雙語(yǔ)例句Dividing the order three PDE into an elastic part to with solution, the rest part pertains to viscous effect which is neither a Mathieu equation nor a Hill one.把每一個(gè)具有變系數(shù)的三階線性控制方程分解為彈性部分及剩余部份，而前者的解析解為已知，后者是一個(gè)二階變系數(shù)線性偏微分方程；By using a new criterion of Hill equation, the paper studies the stable domain for Hill equation which improves some known results, and gives a obivious stable domain.利用希爾方程的一個(gè)新的判別式，研究希爾方程的穩(wěn)定區(qū)域，改進(jìn)了某些已知結(jié)果，并且給出了明確的穩(wěn)定區(qū)間。In a high-intensity optics field, using rotating waves approximation (RWA) and the special transform, the problem of two-level atoms transition attributes to the Hill equation.在強(qiáng)光信號(hào)作用下，經(jīng)過一定的數(shù)學(xué)代換后，上能級(jí)幾率的求解可歸結(jié)為類希爾方程求解； 返回 hill equation