Note that when the var and scope attributes are present, the type of data structure used by JSTL to represent the parsed document is implementation-specific, allowing for vendor optimization.

注意，当var和 scope 属性存在时，JSTL用于表示分解后的文件的数据结构类型以实施为导向，从而厂商可以对其进行优化。

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The results show that the overall dynamic performance of the offset press was poor, so it is necessary to carry out dynamic optimization to the structure of this type of offset press.

分析结果表明，该型胶印机整体动态性能欠佳，有必要进行胶印机结构的动态优化。

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According to the poor linearity of pressure characteristic in a type of electric water valve, the optimization and calculation process of the spool structure was given in this paper.

针对某型号电动水阀压力特性线性度差的问题，对阀芯结构进行优化设计，给出了阀芯的设计和计算过程。

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