A six degree of freedom (DOF) nonlinear dynamic model of the airship was presented based on the body axes coordinate system with the origin at the center of the volume.
在以体积中心为原点的机体坐标系中，建立了完整的六自由度非线性模型。
A dual-origin-coordinate system is made up of a CE output characteristics-coordinate and a voltage coordinate of power sour ce.
提出了由共射输出特性曲线坐标与电源电压 坐标组成的双原点坐标系。
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