如何构造元素的结构是与构造组成关系数据库的列和表同样重要、复杂而且可能非常困难的设计问题。
How you construct models for elements is just as important, complex, and potentially difficult a design question as how you construct the columns and tables that comprise a relational database.
RPD操作符中的远程访问计划是由包装器构造的，其中包含为调用来自非关系数据源的远程请求所需的规范。
The remote access plan contained in the RPD operator is constructed by the wrapper and contains the necessary specification to invoke the remote request from the non-relational data source.
使用由方差和平均梯度构造的新的评价因子——小波邻域信息量作为融合规则选取小波高频系数。
For the image high-frequency part, use the new evaluation factor - wavelet neighborhood information to choose the ultimate wavelet high-frequency coefficients.
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