查询词典 angular brackets

The Von Mises angular function is used to describe the angular correlation for the distributed source and derive a novel distributed source model from the quantitative angular correlation.

利用阵列接收信号协方差阵的特征值分析了源内角度相关程度对有效信号子空间的影响。

Correlation between spin angular momentum s and background angular momentums of planets;2. In the paper the principle of optical rotation due to the transfer of spin angular momentum from light to particles was discussed by analyzing the interaction between the beam of light and birefringent crystal particles, and then an optical tweezers was formed on nanometer optical tweezers system with a linearly polarized light beam (He-Ne laser 633 nm, 10 mW).

从理论上分析了偏振光束与双折射晶体粒子的相互作用过程，讨论了由于光束自旋角动量向晶体粒子的传递所导致的光致旋转效应的原理，并在纳米光镊装置上利用线偏振He Ne激光器(633 nm，10 mW)形成了光镊光阱，利用1/4波片来改变光镊光束的偏振状态，在不同的椭圆偏振状态下实现了直径约为几微米的CaCO3 晶体微粒的捕获和光致转动。

Mean angular acceleration and the increment of angular coordinate as well as the first and second derivative of angular with respect to time is not only the physical quantities which often being used but also important physical quantities.

无限小角位移、有限大角位移、角速度、平均角速度、角加速度、平均角加速度和角坐标的增量以及角坐标对时间的一阶和二阶导数不仅是物理学中常用的物理量，而且也是很重要的物理概念。

A new method to measure the mechanical angular acceleration of rotating system is established by changing the exciting mode of AC asynchronous tachogenerator,and form a angular acceleration tachogenerator to measure the mechanical angular acceleration directly.

摘 要：提出的旋转系统机械角加速度直接测量方法通过对交流异步测速发电机励磁方式的改变，构成了能直接测量机械角加速度的测旋转角加速度发电机。

A new method to measure the mechanical angular acceleration of rotating system is established by changing the exciting mode of AC asynchronous tachogenerator, and form a angular acceleration tachogenerator to measure the mechanical angular acceleration directly.

提出的旋转系统机械角加速度直接测量方法通过对交流异步测速发电机励磁方式的改变，构成了能直接测量机械角加速度的测旋转角加速度发电机。

For achieve two-wheel balanced function, we used fuzzy control algorithm to program the controlled codes. About the processes of control, the encoders is used to measure the angle and angular velocity of two wheels; the gyroscopei is used to measure the angular velocity of the robot; the inclined angle is got from integrating the angular velocity, and is adjusted by angle got from tiltmeter per second.

在控制流程中，用陀螺仪测量机器人倾斜角速度，透过积分得到机器人倾斜角度，且每隔1秒就用倾斜计测量的角度来校正陀螺仪积分角度，透过马达后方的光学编码器来得知马达转动角度与角速度，将陀螺仪、倾斜计与光学编码器的资讯作为控制器的输入，以模糊控制理论计算后，控制马达转动，以达到动态平衡的目的。

A new angular accelerometer of floated-fly-wheel type is introduced in this paper.This angular accelerometer can be used to measure precisely angular acceleration directly.it's principle, structural features, all-round precise blancing technique, testing method and results are discussed.

液浮飞轮式角加速度计的研制邹桂根，林明邦关键词角加速度计，液浮飞轮，随遇平衡，伺服系统中图法分类号TH824近10年来，美国、日本等技术发达的国家都致力于研制角加速度计以替代利用陀螺、线加速度计布阵的角加速度间接测量法，因为后者是将感应。。。

Due to different causes of malnutrition is divided into angular cheilitis, angular cheilitis bacteria, fungi and angular cheilitis.

因病因不同而分为营养不良性口角炎、球菌性口角炎、真菌性口角炎。

This thesis mainly discuss following issues, Theory and simple expressions for array covariance matrixes are derived when angular spread functions are symmetric distribution functions, i. e. the Uniform distribution, the Gauss distribution, the Laplace distribution and the Von Mises distribution, and a non-symmetric distribution function, i. e. the Gamma distribution. And the relation between the effective signal subspace and the array number, or and the nominal angle of the distributed source, the angular spread, the distributed functions, and the Signal-to-Noise Ratio is gained. The dimension of the effective signal subspace increases with increment of the array number. And it is more obvious to the non-symmetric distribution. The dimension of the effective signal subspace decreases with increment of the nominal angle. And the distributed source is equal to a point source as θ=π/2. The dimension of the effective signal subspace increases with increment of the angular spread.

本论文针对阵列信号处理中广泛存在的分布源现象，主要讨论了以下问题：推导了角度分布函数分别为对称的均匀分布、高斯分布、拉普拉斯分布、Von Mises分布和非对称的伽马分布时，分布源阵列接收信号协方差阵的严格模型和简化模型，得到了单个分布源的有效信号子空间随阵元数、分布源中心角、分布角、角度分布函数和信噪比的变化规律：随着阵元数的增加，对所有角度分布函数的有效信号子空间维数也随着增加，且非对称分布函数的有效信号子空间充满整个空间的可能性更大；随着分布源中心角逐步增加，有效信号子空间维数逐步减小，当θ=π/2时，等价于点源情形；随着分布源分布角逐渐加大，有效信号子空间维数也随之增加，直到有效信号子空间充满整个空间；随着信噪比的增加，有效信号子空间维数有一定程度的减少。

The present method shows that angular momentum of the planet wheel about a fixed axis is equivalent to transport angular momentum and relative angular momentum.

推导了行星轮的运动分解为随转动参考系的转动和相对于转动参考系的转动时，计算其对定轴动量矩的一个新方法。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。