Simulation results show that the analysis can reflect the complete working space of 3-ptt CNC serial-parallel machine tools and provide a theoretical basis for automatic control of working process.
仿真结果表明：此分析能较好地反映3—PT T串并联数控机床的完全工作空间，为工作过程的数字化控制提供了理论依据。
When there is a long distance between computers and data-controlling machine tools, serial communication is used instead of parallel communication.
当控制计算机与各数控机床相距较远时，一般采用串行通信方式而不采用并行通信方式。
When there is a long distance between computers and data-controlling machine tools, serial communication is used instead of parallel communication.
当控制计算机与各数控机床相距较远时，一般采用串行通信方式而不采用并行通信方式。
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