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。
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.
利用矢量代数的方法，推导出以方向余弦为参量的物坐标系到世界坐标系的坐标变换矩阵；利用矩阵求逆的方法，推导出世界坐标系到物坐标系的坐标变换矩阵。
My friend and I did some arithmetic, some algebra, derived the general formula for the differential at a point-all stuff he had had in the course.
我和我的朋友做了些算术和代数，得到了某一点的微分公式——这些都是他上课学过的。
By using discussing the relationship of two-kinds of algebra, the conversion matrix of expansion coefficients are derived.
最后讨论两种代数之间的关系，并求出函数展开式系数之间的转换矩阵。
By using an algebraic method related to su(3) Lie algebra, exact solutions of the eigenvalue problem of the reduced Hamiltonian are derived analytically.
介绍了导出平均场加一般对力核多体问题粒子数守恒严格解的无穷维李代数方法。
By using an algebraic method related to su(3) Lie algebra, exact solutions of the eigenvalue problem of the reduced Hamiltonian are derived analytically.
介绍了导出平均场加一般对力核多体问题粒子数守恒严格解的无穷维李代数方法。
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