... 美制细牙螺纹 NF 英国标准细牙螺纹 british Standard Fine Thread 公制细牙螺纹丝锥 tap for metric fine thread ...
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... british Standard Fine Thread 英国标准细牙螺纹 ; 韦氏细螺纹 whitworth standard screw thread 惠氏标准螺纹 british Standard Whiworth Thread 英国标准惠氏螺纹 ...
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... British Standard Fine thread: 英国标准细牙螺纹 British Standard Fine thread: 英国细牙螺纹标准 british Standard Whiworth Thread: 英国标准惠氏螺纹 ...
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BSF British standard fine thread 英国细牙螺纹处理
N a screw thread having a Whitworth profile but a finer pitch for a given diameter 英国标准细牙螺纹 ( abbr: BSF) [engineering]
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