在虚拟接地模式中，高通道将提供电流，低通道将吸收电流。
In virtual ground mode, the high channel will source and the low channel will sink current.
采用虚拟仪器技术，开发了基于混沌选线方法的小电流接地系统单相接地故障选线仪。
Furthermore, based on Lab VIEW virtual instrument technology, the chaotic single-phase-to-ground fault protection is developed.
内存映射被用于将映像和数据文件映射到一个进程的虚拟地址空间中，也就是将文件内容直接地连接到虚地址中。
Memory mapping is used to map image and data files into a processes address space. In memory mapping, the contents of a file are linked directly into the virtual address space of a process.
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