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- In this paper, the problem of controlling the Euler's dynamically buckling problems by means of the coupled feedback controlling and periodic force excitation were studied. 摘要研究了利用藕合反馈控制法和周期激振力法来控制欧拉动弯曲问题。
- The theoretical analysis shows that periodic forcing onlyexcites the polar motion with the corresponding period, and stochastic motion is oneexciting source with the best probability for the Chandler Wobble. 理论分析表明：周期性强迫运动只能激发与其周期相一致的极移运动，随机运动是Chandler摆动最主要的激发源。
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史？
- Suppression of chaotic motion in a class of piecewise-smooth systems by using sine periodic force 外加正弦驱动力抑制一类分段光滑系统的混沌运动
- Can you tell me the time period when it was stolen? 能不能告诉我大概什么时候被偷的？
- Chaucer wrote in the late mediaeval period. 乔叟写作的时代是中世纪末。
- She'll be away for an indefinite period. 她将离开一段时间，何时回来未定。
- This was the most difficult period of his life. 这是他一生中最艰难的时期。
- The meeting finally came to a period. 会议终于结束了。
- A period signals the end of a sentence. 句号表示一个句子结束了。
- She is publishing a history of the war period. 她有一部战争时期的历史著作正在印行。
- The period after supper was given over to games. 晚饭后是游戏时间。
