對兩個自由度的質量塊作位置分析，並以動畫顯示質量塊真實動作，雙彈簧分析。-Two degrees of freedom for the location of mass analysis, and animation shows that the true mass movement, double-spring analysis.

介绍JAVA中的SPRING 的一些知识点，是由传智博客上面的人介绍的 ，对spring做了大概的介绍与讲解-JAVA SPRING introduced in a number of knowledge points, wisdom blog by the mass of people described above, made of spring introduction and explanation about