介绍了向量式瞄准具射弹飞行时间提取的原理和实现过程。

The paper gives an introduction of the principle and realization process of acquisition of projectile flight time from AA guns vector computing sight.

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我们还可以通过解出式中余弦的方法，得到两向量间的角度。

And, we can use that to measure angles between vectors by solving for cosine in this.

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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。

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.

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