On most systems, malloc and free are not reentrant, because they use a static data structure that records which memory blocks are free.

在大部分系统中，malloc和free都不是可重入的，因为它们使用静态数据结构来记录哪些内存块是空闲的。

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The additional data consists of the MQDH structure followed by an array of MQOR records and an array of MQPMR records. Table 4 lists the main fields in MQDH.

附加数据包括MQDH结构和紧接其后的MQOR记录数组和MQPMR记录数据。

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This paper introduced the conception of dimension in data warehouse. Then the methods of updating object records and instance structure of dimensions are described and evaluated respectively.

本文介绍了数据仓库中的维及其相关概念，并分别对维的对象记录和实例结构的更新方法进行了描述和评价。

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