The time_id join keys that meet the filter requirements on the Time dimension table are hashed to create a bit vector that filters rows of the Orders table from the skip scan above.
Time 维度表中满足过滤条件的 time_id 连接键被散列以创建一个位向量，用于过滤以上跳跃式扫描的 Orders 表行。
In this paper a vector controlled ac speed-regulating system is developed, which adopts the rotor flux field-orientated theory to meet the requirements for an electric traction system.
本文依据矢量控制的基本原理，针对电力牵引系统对电机控制性能的要求，设计了基于转子磁场定向的矢量控制交流调速系统。
Parameters of Kalman forecast are designed according to requirements of system and subsequently, system state vector, state transfer matrix and observation matrix are determined.
根据系统的要求，确定了卡尔曼预测的参数，并由此确定了具有预测稳定性的系统状态向量、状态转移矩阵和观测矩阵。
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