例句與造句

1. Green " s theorem is employed to find the quantity relationship among the constraints of heating rate , dynamic pressure and lift in reentry flight . the paper deduced the approximate solution of the optimal aeroassisted coplanar trajectories under the three typical constraints . the performance index to be minimized are either heat input , the total dynamic pressure , time during the atmospheric flight , the time integral of the square of the path inclination ; or maximize the time of flight during the atmospheric portion of the trajetory . an important conclusion is firstly obtained : under the three constraints above , the optimal aeroassisted coplanar transfers with the first forth kinds payoffs have the same optimal control laws
   采用格林函數(shù)法，給出了同一平面氣動力輔助變軌飛行的3種過程約束(氣動加熱率、動壓、升力約束)條件之間關(guān)系的近似定量描述形成的飛行包絡(luò)線.由此求解了航天器同時受3種約束條件時，各種性能指標下的同一平面氣動力輔助變軌軌跡的近似解及相應(yīng)的最優(yōu)控制規(guī)律.文中對近似解與控制規(guī)律的內(nèi)部結(jié)構(gòu)作了細致的分析，得到了一些有益的結(jié)論
2. It's difficult to find path inclination in a sentence. 用path inclination造句挺難的