您要查找的是不是：
- Duty - cycle correction 占空比调节
- I think it my duty to serve the people. 我认为为人民服务是我的责任。
- The pedal of a cycle is attached to a crank. 自行车的踏板与曲柄相连。
- How can I get shut of such an unwelcome duty? 我自发以才能逃脱掉这个令人如此计厌的差事呢？
- A small party of men were told off for burial duty. 一小组人被分派去执行掩埋的任务。
- Be it our duty to comply with his request? 我们有义务满足他的要求吗？
- The teacher wrote the proposed correction at foot. 老师将修改意见写在页底空白处。
- He who does his duty is worthy of praising. 凡是忠于职守的人都值得奖励。
- I feel it my duty to speak frankly to you. 我觉得我有义务要坦白地对你说。
- I felt bad that I had not done my duty. 我很难过，我没有履行自己的职责。
- It is my painful duty to tell him he is dying. 要我把他即将去世的事告诉他，这使我十分为难。
- It's easier to cycle with the wind behind you. 顺风骑车省力。
- He is on night duty three days a week. 他一个星期要上三天夜班。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- The danger recalled him to a sense of duty. 这危险的事唤起了他的责任感。
- The seasons of the year make a cycle. 一年四季构成一个循环。
- I'm duty bound to visit my old aunt. 我有义务去探望年老的姑妈。
- The business cycle experienced a sudden down. 商业周期经历了突然的萧条。
- The soldier volunteered for guard duty. 那个战士自告奋勇去站岗。
- 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。
