The problems are:the storage of cumulating variable at power off, multi-byte division, the detection of rotating speed and the control of facilities by AC power.
这几个问题是：累积量的掉电存储问题、多字节除法问题、转速的检测问题和交流电设备的控制问题。
2
New variable is introduced based on energetic equation, the period of vibration of three wire pendulum is studied using the method of rotating vector.
由能量方程出发，引入新变量，用旋转矢量法讨论了三线摆大角度摆动时的周期。
3
In this paper, the variable processes of the steady flow moving around rotating circular cylinder are visualized by the hydrogen bubble method with two cross wires.