circular flange meaning in English

环形凸缘
圆法兰
圆形法兰

General purpose industrial fans - circular flanges - dimensions
通用工业风机.圆形法兰.尺寸
Ventilation for buildings - ductwork - dimensions of circular flanges for general ventilation
建筑物通风.管道作业.一般通风用圆法兰
Ventilation for buildings . ductwork . dimensions of circular flanges for general ventilation
建筑物的通风.管道工程.一般通风用圆形法兰盘的尺寸
Flanges and their joints . design rules for gasketed circular flange connections . gasket parameters
法兰及接头.带衬垫的圆形法兰接头的设计规则.衬垫参数
Flanges and their joints - design rules for gasketed circular flange connections - calculation method
法兰和接头.带衬垫的环形法兰连接的设计规则.计算方法

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