For the bell shape by vibratory drive tolled bells, in particular those made of cast iron

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• 2. 研磨球笼钟形壳内球面和精铣球笼钟形壳内球道的装置 [P] . 中国专利： CN106624825A . 2017-05-10
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  机译： 铸铁铸管离心铸造机中形心的处理和插入方法

• 4. Immersion bell for treating molten iron - esp. with magnesium to mfr. nodular graphite cast iron [P] . 德国专利： DE2540142A1 . 1977-04-21

  机译： 用于处理铁水的浸入式钟罩-特别是。用镁制造。球墨铸铁

• 5. POWER DRIVE AUTOMATION Bell Tolls [P] . 俄罗斯专利： RU124999U1 . 2013-02-20

  机译： 动力驱动自动化钟路费

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• 7. For Whom the Bell Tolls: Practitioners’ Views on Bell-Ringing Practice in Contemporary Society in New South Wales (Australia) [O] . Murray Parker, Dirk H.R. Spennemann 2020

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