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论述了真空蝶阀在大型火力发电厂设备中的作用 ,阐述了真空蝶阀 3种结构形式 ,说明了真空蝶阀的检测与试验过程
Discusses the role of vacuum butterfly valve in large thermal power plant equipment, describes three kinds of vacuum butterfly valve structure, illustrates the vacuum butterfly valve testing and testing process