relational expression

基本解釋

According to the relational expression, the basic size of cam mechanism can be defined.
由關系式計算最佳凸輪機構的基本尺寸。
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：當索引表達式被用于關系表達式，或作為某個操作符類函數的參數時，查詢優(yōu)化器將考慮使用函數索引。
Using of the geometric relationship of hang system, it derived a relational expression between the horizontal displacement at juncture piers top and the variations of arch rib elevation.
通過對大跨度鋼管混凝土拱橋拱肋分段扣掛懸拼施工的介紹，利用吊裝扣掛體系的幾何關系，推導出交界墩墩頂水平位移與拱肋標高改變值之間的關系表達式。