查询词典 constant angular acceleration

As in the case of linear motion, Eq.(1) holds for any type of angular motion while the other four are true only for uniformly accelerated angular motion.

如在关于线性运动的情况一样，方程(1)适用于任何类型的角运动，而另外四个方程只适用于匀加速角运动。

The polarization angular correlation function is calculated by using azimuthal angular averaging.

在L、C及X波段下，首次用极化角相关函数对分形树森林环境中隐蔽目标进行了检测，说明极化角相关函数方法能够抑制杂波，突出隐蔽目标的散射特性，用于杂波环境中隐藏目标的检测。

Models for the electromagnetic interaction between the target and trunks or between the trunks and trunks are developed, and these models are used to derive the coherent fields scattered by the target and fractal forest. Then, the polarization angular correlation function is calculated by using azimuthal angular averaging, and used to detection target buried in forest.

本文用L系统对森林环境进行了理论建模；研究了有限长分层介质圆柱的树干散射模型；分析了倾斜粗糙地面上树干及分形树的电磁散射特性；讨论了环境对确定目标电磁散射特性的影响；研究了环境与隐蔽目标复合电磁散射，用角相关函数、极化角相关函数对隐蔽目标进行了检测。

The effective signal subspace effected on by the angular correlation is analyzed through the array covariance matrix. One distributed source from any degree of angular correlation cannot be generally taken as the independent distributed source.

对于实际应用和理论推导中，源内角度何等相关程度的分布源相关模型可等价于分布源独立或相干模型要做具体分析，不能笼统地认为所有分布源相关模型都用分布源独立模型描述和处理。

It is noted that the index of angular dispersion for both sexes was smaller,and the mean angular deviation was bigger,which was close to the mean angle by the circular distribution.

但需注意的是，经圆形分布分析，男、女性的角度离散程度指标r均较小，S较大。

A novel optical fiber angular displacement which can be used to measure micro angular displacement and all angle continuously is introduced.

提出了一种全角度并且可以连续测量微小角位移的新型光纤角位移传感器。

A new approach to eliminate the ranges dependence based on angular frequency shifting in space domain was presented, in which, the nonhomogeneity of clutter is removed and the blind area of target detection is reduced due to the fact that the clutter of all the compensated range cells in every channel is moved to the place of the clutter of the desired cell by the different angular frequency shifts being added into spatial data along all Doppler channels for every compensating range cell.

第七章针对非正侧视相控阵机载雷达，由于杂波在距离上呈现出严重的非均匀性，尤其是在近程这种依赖距离的杂波谱呈现的非均匀现象更为严重，使得用于计算自适应权的协方差矩阵不可能直接由距离单元数据统计平均来估计得到，否则STAP处理及其降维技术难以获得理想的杂波抑制性能和目标检测性能，甚至恶化。

Aiming at the signal processing problems that exist in online fault diagnosis for train running gear, based on discussing the principle of characteristic spectrum analysis, a method of full period and uniform angle sampling is applied, which transfers the vibration signal from time domain into angular domain. The angular domain signal is transferred into corresponding characteristic spectrum using FFT. Through spectrum estimation and analysis, fault characteristic spectrum values of running gear components are acquired to distinguish their faults.

在讨论特征分析方法原理的基础上，针对机车走行部故障在线监测过程中存在的信号分析与处理问题，运用整周期等角度采样方法将时域振动信号转换为角域信号，采用FFT变换将角域信号变换为对应的特征频谱，通过谱估计、谱图分析得到机车走行部各零部件的故障特征谱值，再根据该特征谱值识别机车走行部各零部件的故障。

Here is an example of the usefulness of the concepts of angular impulse and angular momentum.

这有一个例子，可以说明角冲量和角动量概念的用途。

Therefore, the purpose of this study is to compare the differences, using angular, angular velocity, and landing impulse and vibration responses between different heights and with shoes or bear foot for different segments.

研究除了解不同高度落地造成肢体受力的振动响应大小，也建立关节肢段的振动响应模式，更希望结果能应用在鞋子及地板吸振设计。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。