为此，需使用一个XPath表达式来识别由XML数据组成的部分，通常为一个特定的XML文本节点，它会返回所有关系数据值。
To do this, an XPath expression is used to identify the portion of the XML data, normally a specific XML text node, that returns each relational data value.
SQL标准xmltable函数提供了一种简单的方法，可以提供一组将XML映射到相应关系值的XPath表达式。
The SQL standard XMLTABLE function provides a straightforward way to provide the set of XPath expressions mapping the XML to desired relational values.
根据该差分方程的特征值表达式讨论了AGC模型设定序列的稳定区域和稳态误差与AGC模型参数之间的关系。
On the basis of the expression of characteristic value of the differential equation, the relationship between the stable domain, steady state, steady-state error and AGC model parameters is discussed.
然而，后续的表达式利用关系比较生成布尔值，然后对结果进行逻辑运算。
The subsequent expressions, however, produce Boolean values using relational comparisons, then use logical operations on the results.
在鞍结分岔的参数范围内证明了具有鞍结分岔的二次系统都存在同宿轨道，得到了同宿轨道的解析表达式及其幅值与分岔参数的关系。
It was proved that there exist homoclinic trajectories of a quadratic system in the range of the parameter of the saddle node bifurcation.
根据试验结果，拟合了平均粘结强度表达式，得到了局部粘结应力最大值和混凝土立方体抗压强度的关系。
According to the test consequences, equations of average bond stress, relationship between the maximum local bond stress and concrete cubic compression strength are proposed.
采用矩阵的奇异值分解原理，对曲面最佳适配的灵敏度矩阵进行分解，得到不确定度参数与测点随机误差的关系表达式。
The sensitivity matrix was then decomposed by singular value decomposition (SVD) method, and the relationship between the surface geometric errors and the uncertainty parameters was formulated.
该属性系统实际是一个“依赖”属性系统，因为它会跟踪属性表达式之间的依赖关系，并在依赖关系更改时自动重新验证属性值。
The property system is truly a "dependency" property system in that it tracks dependencies between property expressions and automatically revalidates property values when dependencies change.
该属性系统实际是一个“依赖”属性系统，因为它会跟踪属性表达式之间的依赖关系，并在依赖关系更改时自动重新验证属性值。
The property system is truly a "dependency" property system in that it tracks dependencies between property expressions and automatically revalidates property values when dependencies change.
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