Meanwhile the paper analyzes the deficiency of current transmission coding and describes a new data transformation method, base91 coding with high encoding efficiency but low data extension.

论文同时分析了现有的电子邮件系统传输编码存在的缺陷，提出了一种利用编码效率高、数据扩展率低的数字数据变换方法：基数- 91编码来提高编码效率。

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In the vertical circulating parking equipment, the power device drives the chain transmission system , and the latter pulls the cages to circulate through the chain extension components.

在垂直循环停车设备中，动力装置带动链传动系统运行，再经链条外伸件牵引存车托架循环运动，完成存、取车辆作业。

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The system, which consists of one body module and a number of extension modules, achieves one point-to-multipoint data transmission based on master-slave mode.

系统由一个PL C本体模块和多个PLC扩展模块组成，实现了主从模式的一点对多点的数据传输。

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