例如，这种理论模型允许用更有效的等价操作来代替关系代数操作同时不影响结果。

This theoretical model allows, for example, that relational algebra operations to be replaced by more efficient equivalent operations whereas not interfere with the result.

youdao

通常系统采用基于关系代数操作，请求分解定位和存取路径的优化三种技术对请求进行优化。

The system always adopt three kinds of technology that base on relational algebra operation, request decomposit localization, access route optimization to make optimization.

youdao

DB 2 UDB没有为位数据类型或布尔数据类型提供本机支持，它既不支持逐位操作，也不支持布尔代数操作。

DB2 UDB does not have native support for bit or Boolean data types, neither for bitwise operation nor for Boolean algebra operations.

youdao

Let's say you have to go through three or four operations to get a final number, well, do it algebraically.

让我们说,你不得不通过3-4个操作,才能得到最终的数，好吧，用代数方法求解。

麻省理工公开课 - 固态化学导论课程节选