In the test program, we'll attach a wheel listener that has the background color loop through the array of colors based upon the direction, as shown in Listing 4.
在测试程序中，我们增加了一个鼠标滚轮侦听器，它让背景色按照某一方向在颜色数组中循环，如清单4所示。
2
According to the dynamical equation and the theory of closed loop feedback, the angle scheme of signal detector and discrete exciter in circumferential direction is deduced.
根据半球谐振陀螺的动力学方程和闭环反馈理论，推导出离散激励器和信号检测器在壳体环向的角度配置；
3
The loopdirection is judged through the vector product of the adjacent two edges on the vertex with maximum coordinate value.