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1)  Williams' model
Williams模型
2)  Choi Williams Distribution
Choi-Williams
3)  Williams design
Williams设计
1.
Sample size calculation for Williams design in clinical trials;
临床试验Williams设计中样本含量的估算方法
2.
Methods The Williams design in three periods and three treatments cross-over trial was discussed through a real example of clinical trial.
目的探讨交叉试验中的Williams设计及其在临床试验应用时的随机化与检验效能分析。
4)  Choi-Williams distribution
Choi-Williams分布
1.
Using Choi-Williams distribution to extract feature from signal can effectively inhibit Wigner-Ville distribution s cross-terms,but meanwhile,decreast the aggregation of time-frequency.
利用Choi-Williams分布,可以有效地抑制上述存在的交叉项问题,但其时频聚集性有所下降。
2.
In this paper, the frequency characteristics of six cases of normal first and second heart sounds and one case of abnormal heart sound were analyzed by using wavelet transform and Choi-Williams distribution.
我们分别采用小波变换和Choi-Williams分布两种方法对六例正常第一、第二心音和一例异常心音的频率特性进行了研究。
5)  Williams-Wittrick algorithm
Williams-Wittrick算法
6)  wittrick-williams algorithm
Wittrick-Williams算法
1.
The method integrates several techniques such as the Wittrick-Williams algorithm and the guided and guarded Newton method in the exact dynamic stiffness method(DSM) for the vibration analysis of skeletal structures,and the self-adaptive FEM for linear BVP based on the Element Energy Projection(EEP) super-convergence calculation.
本文将杆系结构自由振动精确分析的Wittrick-Williams算法、导护型Newton法和基于单元能量投影(EEP)超收敛计算的自适应有限元法有机结合,应用于平面变截面曲梁面内自由振动的分析,可以得到数值精确解,即频率和振型的精度均可满足用户事先给定的误差限。
2.
The method integrates several techniques such as the Wittrick-Williams algorithm and the guided and guarded Newton method in the exact Dynamic Stiffness Method(DSM) for the vibration analysis of skeletal structures,and the self-adaptive FEM for linear BVP based on the Element Energy Projection(EEP) super-convergence calculation.
该文将杆系结构自由振动精确分析的Wittrick-Williams算法、导护型Newton法和基于单元能量投影(EEP)超收敛计算的自适应有限元法有机结合,应用于平面变截面曲梁面内自由振动的分析,可以得到数值精确解,即频率和振型的精度均可满足用户事先给定的误差限。
补充资料:Williams plastometer
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性质:由两块光滑且平行的金属平板构成的一种测试橡胶可塑性的仪器。在规定的温度(70℃)、载荷(5kg)下,把规定尺寸的圆柱状橡胶试样压缩规定的时间(3min)后,测量出试样高度的变化值。再按公式计算出威廉姆可塑性参量,它是一个数值在0~1范围内的无量纲值,其值越接近于l表示被测橡胶的可塑性越好。

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