Many science-related English words starting with the letters al—including algebra, alkaline, and algorithm—are derived from Arabic, in which the prefix al just means “the.”
The derived relational algebra operators are widely used in the relational database query languages.
关系代数的派生算子在关系数据库查询语言中得到了广泛应用。
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The coordinate transformation matrix based on the direction cosine parameters from the object coordinate system to the world coordinate system is derived by vector algebra.