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。
The additional volume extends substantially in longitudinal direction and is symmetrical with respect to the longitudinal plane of symmetry of the hull.
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。
On analyzing the longitudinal plane motion equation and lateral plane motion equation in guided phase, the guidance logic for perpendicular impact task was devised.
针对石油化工行业大量采用的等径挤压三通，提出了一个计算内压载荷下的纵向平面内挤压圆角处各应力分量的近似方法。
An approximate method for calculating the elastic stresses at the squeeze at the squeeze corner sections of an identical diameter Tee branch pipe connection under internal pressure was presented.
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