Self excited oscillation in turning process is a kind of unstable phenomenon resulting from former vibration trace. Eliminating of the phenomenon is a key technology in cutting process.

车削过程自激振荡是一种以残留振痕作为机械延时反馈造成的动态失稳现象，消除这一现象是机械加工过程中的技术关键之一。

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He joined West Ham from Blackburn - turning down Liverpool in the process - in January 2007, and was made skipper of the Hammers that summer.

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In the process of buying and turning round more than 30 companies, he realised that a third of the employees he encountered were illiterate and two-thirds could not do basic mathematics.

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Turning himself in would have started a process that would have ended with Assange's extradition to the United States, she said.

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