The software design, using in the top-down design ideas, all the procedures used hierarchical modular design, improving the portability of the software.
在软件设计中采用了自顶向下的设计思想，所有程序采用分层次模块化设计，提高了软件的可移植性。
This design categorized all equipments which were used in the system, and similar devices we-re designed for the same interface control procedures, such treatment is conducive to reunification.
本设计将涉及的设备进行分门别类，并针对同类的设备设计相同的接口控制程序，这样有利于统一处理。
The properties and characteristics of core materials commonly used in plasma cutting inverter are introduced in the paper. The design procedures and examples of main transformer are proposed.
介绍了逆变式等离子切割机主变压器常用的磁心材料的性能特点，提出了设计、制作主变压器的步骤、计算方法及示例。
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