Methods: 130 cases of thoracic segment carcinoma of esophagus were treated by radical operation and their data were collected th rough the follow up in the out patient department.

方法：对130例胸段食管癌患者作根治性手术治疗，术后通过门诊随访，将有关资料进行统计分析。

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Statecheck operation of checkpoint preserves the user register context and user data segment of process checkpointed at this time to checkpoint file.

检查点机制的状态检查操作就是将进程在该运行时刻的用户级寄存器上下文和用户数据段保存到检查点文件中。

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During the cutting process, the computer can realize locus displaying and monitoring, and suspend operation or return to any program segment when needed through manual data input.

在切割过程中，计算机能实现切割轨迹的圆型显示、监控、遇有故障可通过人工干予中断，进行任意程序段返回。

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