To recreate outer-space conditions of micro-gravity, the plane performed 6 parabolic flight 7 maneuvers over the Gulf of Mexico after 8 taking off from north Florida.
为了营造外太空的微重力状态，飞机从佛罗里达州北部起飞后，在墨西哥湾上空完成了一连串抛物线动作。
Using the analytical relationship, many boundaries namely scissors sketed, could be drawn on the parameter plane of horizontal tail area and aeroplane center of gravity.
利用这种解析关系，可以在平尾相对面积和飞机重心位置的参数平面上，绘制出各种限制边界，形成所谓“剪刀图”。
The method of compressed mass plane coefficient for the inversion of three dimensional single density discontinuity on gravity data is most popular in use.
利用重力资料反演三维单一密度界面的质面系数法是目前最为常用的方法之一。
This project recommend concrete gravity dam plan, by means of analysis geology data, we could select dam foundation plane reasonablely.
工程拟推荐碾压混凝土重力坝方案，通过对地质勘察资料细致分析、评价，从而合理选择坝基建基面。
When a curved beam is bending in the plane of the curvature, the neutral axis of cross section is not identical with the axis of gravity due to the influence of the initial curvature.
由于曲率的影响，曲线梁在其曲率平面内弯曲时的中性轴不通过横截面的形心。因此弯矩在形心处要引起正应力，从而引出所谓“等效轴力”的概念。
Finally, in combination with quantitative indexes determinied in the code for "Design of Concrete Gravity Dams", the shear strength parameters of weak structural plane are determinied.
并结合《混凝土重力坝设计规范》中提出的用粒度成分定量指标选取软弱结构面抗剪强度参数，对软弱结构面抗剪强度参数取值问题进行了探讨。
In this paper, the stresses of gravity dam and dam foundation are calculated by the coupling method of finite element and half plane boundary element.
本文用有限元与半平面边界元耦合法计算了坝体坝基应力，又结合边界配置法求出了坝踵应力强度因子。
By using the equations, a time-varying problem of up-growing rectangular plane considering the gravity is solved. Moreover the elastic and viscoelastic analytical results are obtained.
并依据此方程求得了一个时变力学问题——自重作用下矩形平面向上增长粘弹性时变力学解。
We used formula of gravity anomalies of a 2d model, computed gravity anomalies with arbitrary Angle of the fault plane, depths to the top and bottom of the concealed fault structure.
应用二度体倾斜断层的正演公式，计算任意倾角及上、下埋深不同的隐伏断层模型的重力异常。
The barycentric coordinates of the plane view projection of a coal face are solved with a formula of geometric gravity centre.
利用平面图形几何重心公式计算回采工作面水平投影图形的重心坐标，然后根据影响传播角和开采深度计算下沉盆地中心位置的坐标。
The barycentric coordinates of the plane view projection of a coal face are solved with a formula of geometric gravity centre.
利用平面图形几何重心公式计算回采工作面水平投影图形的重心坐标，然后根据影响传播角和开采深度计算下沉盆地中心位置的坐标。
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