The additional volume extends substantially in longitudinal direction and is symmetrical with respect to the longitudinal plane of symmetry of the hull.

附加体大体上沿纵向延伸，且相对于所述船体的对称的纵向平面是对称的。

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On analyzing the longitudinal plane motion equation and lateral plane motion equation in guided phase, the guidance logic for perpendicular impact task was devised.

通过分析导弹在导引段的纵向平面运动方程和侧向平面运动方程的特点，设计了实现垂直打击任务的制导逻辑。

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With this method, the transversal stresses are solved as a plane strain problem, and consequently the longitudinal stresses are calculated with an analytic formula.

该方法按平面应变问题求解横向温度应力，在此基础上用解析公式计算纵向温度应力。

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