Note: the query optimizer considers using a functional index when the index expression is used in a relational expression or as an argument to one of the operator class functions.
注意：当索引表达式被用于关系表达式，或作为某个操作符类函数的参数时，查询优化器将考虑使用函数索引。
The enrichment value of resources calculated by the method of index expression could synthetically evaluate the enrichment of resources on the comparative dimension.
指数表示法计算的资源丰度值实现了资源丰度在可比尺度上的综合评价。
A successive approximation solving procedure of interval model was put forward, and the non-probabilistic index expression and its analysis method of deep rock around roadway was formed.
提出了区间模型的逐步逼近求解程序，构建了深部坑道围岩稳定的非概率指标及其分析方法。
A successive approximation solving procedure of interval model was put forward, and the non-probabilistic index expression and its analysis method of deep rock around roadway was formed.
提出了区间模型的逐步逼近求解程序，构建了深部坑道围岩稳定的非概率指标及其分析方法。
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