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根据几年来使用激光切割机的体会，针对目前国产激光切割机的薄弱环节——聚焦跟踪系统——分析了其影响切割质量的机理，结合实际应用要求，提出了聚焦跟踪系统的设计原则。
According to the experience of using laser cutting machine in recent years, aiming at the current weak point of domestic laser cutting machine - focus tracking system - the mechanism of cutting quality is analyzed. The design principle of focus tracking system is put forward according to practical application requirements.