本文分析了这三种管颈击穿的失效机理及其对策。
An analysis is given of the failure mechanism of the neck breakdown, accompanied by its control means, in the text hereunder.
所述在割管机的工序，先使用驱动机构带动刀片切割管颈，再用火加热被切割处，达到管颈切割的目的。
The working procedure of cutting tube: firstly using driving mechanism to drive cutter blade to cut the neck tube, then using fire to heat the cut position to achieve the purpose of cutting neck tube.
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