Formulae on the base vectors and the coordinate variables derivative going with fluid particle and their application;
因为标量与坐标系无关，故两个矢量的点积称为标量不变量。
By using the discrete position base - vectors approximating for the continuous position base - vector, the discrete position presentation is constructed.
用离散的位置基矢近似替代连续位置基矢，建立分立位置表象。
In order to accomplish coarse alignment on a swaying base, the integrations of the gravity vector in the inertial coordinate of two different periods of time are selected as the reference vectors.
根据定姿算法中参考矢量构造方式的区别将解析粗对准算法分为传统算法和摇摆基座算法。
By using the discrete position base-vectors approximating for the continuous position base-vector, the discrete position presentation is constructed.
用离散的位置基矢作为连续位置基矢的近似，构建分立位置表象。
The knowledge base is designed as a multidimensional tree. The diagnosis data are collected through testing and reasoning the objects. Fault positioning is realized by using characteristic vectors.
知识库设计为多元故障树，诊断数据来源于对被诊断对象的测试与知识推理，依据特征向量实现故障定位。
The knowledge base is designed as a multidimensional tree. The diagnosis data are collected through testing and reasoning the objects. Fault positioning is realized by using characteristic vectors.
知识库设计为多元故障树，诊断数据来源于对被诊断对象的测试与知识推理，依据特征向量实现故障定位。
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