An improved method for calculating unconfmed seepage with changing dement conductivity matrix 改进的单元渗透矩阵调整法求解无压渗流场
2.
Some years ago an american psychiatrist named william dement published experiments dealing with the recording of eye - movements during sleep 前些年，美国一位精神病学者发表了一篇报告，报告中记录了眼球在睡眠时的活动情况。
3.
That means sleeplessness is of “ epidemic proportions in this country , ” says dr . william dement , director of the sleep disorders center at standford university school of medicine 斯坦福大学医学院睡眠失调中心主任威廉?迪蒙特说，这意味着睡眠不足“在这个国家里已经到了流行病的地步” 。
4.
Traditional power line carrier communication has some shortcomings on communication quality , which let it does n ' t adapt to the dement of the power developing 电力线载波通信以电力线为载体，与其它通信方式比较有着特殊的优势。传统的电力线载波通信在通信质量上的缺陷使其不能适应电力发展对通信的要求。
5.
This paper simply introduces the device of on - line monitoring for the thrust of the rotating maching , then discu ed the finite dement analyses on the on - line monitoring elastic dement for measuring thrust in detail , in order to develop the performance of the se or and the device , we calculated the distribution of the stre 、 strain 、 axial di lacement in the elastic element using the finite element method when the axial forces f = 3 104n , the result is very satisfied 简单介绍大型旋转机组轴向力在线监控装置，然后详细介绍轴向力测力弹性元件的有限元分析，为了提高所研制的测力传感器的性能，采用有限元方法计算了弹性元件在轴向力f = 3 104n时的应变、应力、灵敏度及轴位移等的分布情况，分析结果表明：所设计的测力传感器完全符合厂方的要求及仪表性能指标。
