下落雨滴的形状可以近似地用旋转椭球体来处理。
The shape of falling raindrops can be approximately treated as spheroids.
基于以下假定条件：（1）滑动面为旋转椭球体；
Under the following assumptions which include:(1)The sliding surface is rotational ellipsoid;
摘要以旋转椭球体面上某点为原点建立一个大地坐标单位活动坐标架。
In this paper, unit moving trihedron is first constructed for a point on the surface of a revolution ellipsoid.
理论上推导出的水下前向散射目标强度的计算公式与旋转椭球体目标强度的经验公式一致。
The result shows that the target strength formula derived in this paper is consistent with that of the rotational ellipsoid.
用分步计算和广义球面坐标变换两种方法对椭球体绕对称轴旋转的转动惯量进行了计算，计算表明，后一种方法简单、实用，在工程实际中有应用价值。
The rotary inertia of an ellipsoid rotating around the symmetry axis is calculated by use of the divided calculation and the extensive spherical coordinate transformation.
用分步计算和广义球面坐标变换两种方法对椭球体绕对称轴旋转的转动惯量进行了计算，计算表明，后一种方法简单、实用，在工程实际中有应用价值。
The rotary inertia of an ellipsoid rotating around the symmetry axis is calculated by use of the divided calculation and the extensive spherical coordinate transformation.
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