Here we see that the mapping for Customer's Address field links the two halves of the relationship together with the foreign key reference in the table schema file.
这里我们看到Customer的Address字段映射用表模式文件中的外键引用将关系的两部分链接在一起。
Dynamic simulation is not only the basic tool for the analysis and control of power system dynamic security, but also the key reference for system operation in a power dispatching center.
电力系统动态仿真既是 电力系统动态安全分析与控制的基本工具，也是电网调度部门指导 电力 生产的主要依据，因此，动态仿真的准确程度直接关系到 电力系统的安全经济运行。
Besides, the material type is a key reference factor in selecting electronic resources.
资料类型是选择电子资源的重要参考因素。
Besides, the material type is a key reference factor in selecting electronic resources.
资料类型是选择电子资源的重要参考因素。
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