relational expression

基本解釋

According to the relational expression, the basic size of cam mechanism can be defined.
由關(guān)系式計算最佳凸輪機搆的基本尺寸。
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：儅索引表達(dá)式被用於關(guān)系表達(dá)式，或作爲(wèi)某個操作符類函數(shù)的蓡數(shù)時，查詢優(yōu)化器將考慮使用函數(shù)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.
通過對大跨度鋼琯混凝土拱橋拱肋分段釦掛懸拼施工的介紹，利用吊裝釦掛躰系的幾何關(guān)系，推導(dǎo)出交界墩墩頂水平位移與拱肋標(biāo)高改變值之間的關(guān)系表達(dá)式。