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Discussion on Graphic Symbols for Normally Closed Cut-Off Valves
Author(s): 
Pages: 41-42
Year: Issue:  1
Journal: Valve

Keyword:  截止止回阀 常关 图形符号 标准;
Abstract: 论述了截止止回阀在工程图中的标注方式,介绍了截止止回阀常闭状态的标注用图形符号,推荐了1种适用于特殊状态的图形符号。
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