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- To research on replacement period of Auto-transmission fluid should be great significance to ensure the auto-transmission on normal work and prolong it's usage age. 自动变速器油更换周期问题的研究探讨,对保证汽车自动变速器的正常工作和延长其使用寿命具有重要的意义。
- Using the property of Markov at the points of replacement period, a model of de termining the optimal period is developed with objective of maximizing the mean time to first failure of system. 利用在更换周期点上具有的马尔可夫性质，以系统首次故障前平均工作时间最大为目标建立了确定最佳更换周期的模型。
- Hairpieces need to be replaced periodically. 假发需要定期更换。
- Right now, sleep deeply the mammary gland cell of one winter begins coruscate to give new energy, enter exuberant cellular replace period, metabolism is the most active. 此时，沉睡了一冬的乳腺细胞开始焕发出新的活力，进入旺盛的细胞更替时期，新陈代谢最活跃。
- In addition, we supply small parts for replacement. 此外，我们还提供备用小零件。
- Good job they have get a replacement for him. 他们把他替换下来真不错。
- 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。
- We need a replacement for the secretary who left. 我们需要一个人代替已离职的秘书。
- 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。
- The computer equipment of the electronic reading-room should be replaced periodically. 摘要电子阅览室的电脑设备必须周期性的更换。
- A replacement for deleted matter. 替代被注销内容的东西
- 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？
- They are engaged in the supply of small parts for replacement. 他们从事提供备用小零件的工作。
- 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？
