Symbolic representation of pipework components for use on engineering drawings ; basic requirements 工程图纸的管道部件符号表示法.第1部分:基本要求
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Symbolic representation of pipework components on engineering drawings ; functional representation 工程图纸的管道部件符号表示法.第2部分:功能表示法
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Symbolic representation of pipework components on technical drawings ; functional representation ; examples for the representation of open or shut - off flow 工程图纸的管道部件符号表示法.功能表示法.第2 bb 1