光栅数据的层通常称为段，而术语层仍然用于光栅和矢量数据。
Layers of raster data are more often called bands, although the term layer still applies to raster as well as vector data.
对于第一阶段运用矢量分析和激波理论关系，建立了适用于高速撞击条件的非线性激波模型。
Vector analysis and shock wave theory are applied to the initial phase during which the contact periphery expands more quickly than the compression wave fronts in the droplet.
介绍了一种极低速段永磁同步电机无速度传感器矢量控制方法。
A sensorless vector control method for permanent magnet synchronous motor (PMSM) drive at very low speed was presented.
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