您要查找的是不是：
- For example, vibration frequency of 440 times per second, the vibration cycle for each 1 / 440 second, this is the time of the wavelength. 例如振动频率为每秒钟440次，则振动周期为每次1/440秒，这也就是时间中的波长。
- An Analysis of Vibration Cycle for Spring Balance 弹簧振子振动周期的分析
- The Study on the Vibration Cycle of a Pin Runaway Escapement 销钉式无返回力矩钟表机构振动周期的研究
- The pedal of a cycle is attached to a crank. 自行车的踏板与曲柄相连。
- I do not like to go to the movies by my self. 我不喜欢自己一个人看电影。
- I my self is going to make a sandwich. 我要亲手做个三明治。
- He was a wreck of his former self. 他身体坏得不成样子，已兴从前判若两人。
- Knowledge of self increases as one gets older. 随着年岁的增长，人们的自我认识也不断加深。
- He's not looking like his old self lately. 他最近看起来不像以前那样。
- He is my best friend, my second self, as it were. 他是我最好的朋友，或者说，是第二个我。
- He never has any thought of self. 他从不考虑个人得失。
- It's easier to cycle with the wind behind you. 顺风骑车省力。
- He is now out of all conceit with his former self. 他现在全盘否定了他原来的自己。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- The seasons of the year make a cycle. 一年四季构成一个循环。
- The business cycle experienced a sudden down. 商业周期经历了突然的萧条。
- This is the cycle of economic booms and slumps. 这是经济繁荣和经济萧条的周期变化。
- Cycle across America? Sounds a bit dodgy to me. 骑自行车横越美国? 听起来有些冒险。
- The pedals of a cycle are attached to a crank. 自行车的踏板与曲柄相连。
- The pedals of a cycle are attached to the crank. 自行车的踏板与曲柄相连。
