When the regular BP neural network is used, it may have poor performance because of bad convergence. So we choose improved BP neural network as classifier, which combines momentum and adaptive learning rate, and improve the learning and recognition efficiency.

First, by the composition theorem of acceleration of influence move, strict mechanical analysis and accurate mathematical computations, we have acquired the presentation formula of acceleration of the movable mass of the gyroscope rotating in a constant angular velocity in an inertia coordinate system.

利用牵连运动的加速度合成定理，通过严格的力学分析和严密的数学演算首先得到其活动质量当陀螺仪在惯性坐标系中作定常角速度转动时的加速度表达式。

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Surface condition in West China causes excessive velocity mis-tie at intersecting point of seismic lines to greatly reduce the accuracy of velocity field.

由于我国西部特殊的地表条件，使相交测线处常出现速度不闭合现象，明显地降低了速度场的精度。

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A desingularized panel method was developed for calculating the three-dimensional nonlinear potential flow about a submerged ellipsoid moving at constant forward speed.

本文开发了一种去奇异面元法用于计算以定常前进速度运动的近水面椭球体引起的三维非线性自由面势流。

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Then a angular velocity control law is designed for the robot to track the desired environmental boundary in constant linear velocity.

然后，为机器人设计了角速度控制率使得机器人最终以常线速度跟踪期望的边界曲线。

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Uniaxial Compressive Strength of Frozen Silt Under Constant Deformation Rates

冻结粉砂在常变形速度下的单轴抗压强度

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The constant-gain negative velocity feedback, Lyapunov feedback as well as a linear quadratic regulator ( LQR) approach had been used for active vibration control with the beam subjected to impact excitations and/ or thermal loads.

采用常增益速度负反馈控制、Lyapunov反馈控制和基于独立模态的线性二次型调节器（LQR）设计主动控制器，实现了层梁结构脉冲激励和热载荷作用下的振动主动控制。

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A method for measuring two-dimensional unsteady flow velocity with x-hot-wire probes

用X热线探针测量二元非定常流速度的方法

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While a vehicle flying near surface waves, flow fields are analyzed based on ground ( water)-effect vehicle's features and the concept of corrective terms of unsteady velocity potential flow affected by vehicle-wave coupling is presented by means of a linear superposition principle.

针对地（水）面效应飞行器的特点，分析了近水面波飞行时的流场特征，利用线性叠加原理，提出了飞行器与水面波耦合影响的非定常速度势修正项概念。

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In an unbounded homogeneous medium, waves propagate without interruption at a constant speed and along a fixed path. But with the insertion of an obstacle in the medium, some secondary waves will be emitted from the obstacle, which is called scattering.

波在一个无限的均匀介质里，是以常速度沿着固定路线不受干扰地向前传播的，但若有障碍物嵌入介质，则会产生波的散射。

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It adopted a medium pace, sometimes staying on the surface, sometimes diving to avoid some ship, and so I could observe both the inside and topside of this highly unusual sea.

它以中常速度行驶，有时浮出水面，有时潜入水底，躲避往来的船只，这样，我可以从水里面和水面上来观察这浪新奇的海。

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The slab-on-girder bridge is modeled as orthotropic plate, and the vehicles are modeled as a group of loads moving on top of the bridge deck at fixed distance and constant speed.

将板梁桥等效为正交异性板，车辆等效为等间距常速度在正交异性板上移动的一组荷载。

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Not only more accurate inversion results compared with constant velocity scan, but also accurate average interval velocity ratio and interval velocity ratio at the both sides of reflector were obtained.

实践证明，利用该方法不但可以获得比常速度比值更精确的反演结果，而且可以得到较准确的速度平均比值和上、下层的速度比值。

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In this paper, taking an crack extending with constant velocity On the longitudinal plane as the example, the author discusses the relationship between extending velocity and shear stress.

本文以纵向平面上断裂按常速度扩展为例，讨论了滑动速度与剪切应力的关系；

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An Inverse Analysis Method of Inner Force Field Hypoelastic Parabola Beam of Grade Zero under Constant Velocity Field

定常速度场假定下零级次弹性抛物柱体内力场的逆解法分析

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Second, the constant velocity model is applied to the EKF tracking in a single site manner.

针对目标运动的常速度模型，建立了单站形式的扩展卡尔曼滤波跟踪算法。

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Inertial effects of hypoelastic cylindrical bar of grade zero under simple extension of constant velocity

零级次弹性圆柱杆在常速度拉伸时的惯性效应

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Analysis of tube with constant creep rate

蠕变常速度下筒形结构分析

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Ray tracing with constant velocity gradient and inversion of 2-D interval velocity

常速度梯度射线追踪与二维层速度反演

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After the collision between Comet Shoemaker-Levy 9 ( SL9) and Jupiter, some ring structures propagating outwards at constant speed (-450m/ s) were observed on the surface of Jupiter, which implicates these rings are linear waves caused by the collision.

苏梅克-列维9号彗星（SL9）与木星相撞后，在木星上观测到的以常速度（-450m/s）向外扩展的圆环意味着这是碰撞在木星大气中引起的线性波动。

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For more comprehensive studies of the steady velocity fields in a liquid bridge of larger Pr number, we chose several different horizontal cross-sections to measure velocity fields.

并且在液桥中取了几个典型横截面进行测量，以期对大Pr数液桥的定常速度场有比较全面的定量的量测。

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