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编写一个Ellipsoid类，用于椭球体的表示，其中定义三个私有变量表示一个椭球体的长半轴a短半轴b和扁率apha(Write a Ellipsoid class, used to represent the ellipsoid, which defined three private variables represents an ellipsoid semimajor axis semiminor axis B and a of APHA)

说明：  电信公司有UNIX服务器出租业务，针对 该出租业务需要一套办公系统来提升办事 效率，提升该业务信息化程度（无纸化 办公），我们的系统就是针对该出租业务 而提供的完整解决方案。(Telecom companies have UNIX server rental business. The rental business requires an office system to upgrade its services. Efficiency, improve the degree of informatization of the business (paperless) Office), our system is for the rental business. And provide a complete solution.)

说明：  SpringBoot + Vue前后端分离的航天机票管理系统，使用MySQL作为数据库(Spring boot + Vue front and back end separation of space flight ticket management system, using MySQL as the database)

说明：  自己系统开发，用与学习和后面项目的开发，主要集成springboot(Develop your own system, use and learn, and develop later projects, mainly inherit spring boot)

上传下载java很简单很实用的代码，已经测试可以正常使用的(up/load for java)

This member is continually incremented when new prefixes need to be generated Source Code for Andriod.

处理dubbo和Spring占位符问题，使用springBoot(Dealing with Dubbo and Spring placeholders)

Mobile Developers Guide To TheGalaxy 移动开发阐述，对比了当前市面上流行的多种移动平台j2me, iphone, symbian, android, palm等等，让你了解移动开发，并决定在项目中使用哪一种平台.(Mobile Developers Guide To TheGalaxy Mobile development guide, with which you can decide which platform you can use for your project, j2me, iphone, symbian, android, palm or other else.)

java语言开发的彩色图形，对于学习java语言中的色彩应用，十分有帮助(this is a java program which paint a colorful circle,this program is helpful to those who want to know how to use color in java)

ssd8Exercise4上机作业，代码高效正确，可运行且有说明文档。(ssd8Exercise4 machine operation, efficient code correctly, you can run and there is documentation.)