This is why the protective relay must be reliable, maintainable and fast in operation.
这就是为什么保护继电器必须可靠，易于维护和快速运作。
Software design technology is very important for protective relay device based on the microcomputer.
软件设计技术对微机保护装置的开发非常重要。
Software design technology is very important for protective relay device based on the microcomputer.
软件设计技术对微机保护装置的开发非常重要。
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