初速度

You can find interesting things from speed metal at the turn of the 90's, too.

你还可以在90年代之初的速度金属找到一些有趣的配饰。

Based on X-filtered LMS algorithm and -filtered LMS algorithm adaptive inverse control, we use a new variable step size LMS algorithm. Adding little computation, variable step size LMS algorithm can result in fast convergence speed and low residual error simultaneously. The adaptive feedback control can counteract the beginning error of the system. The adaptive disturbance canceler can best erase noises and disturbances.

在原来的X-滤波LMS算法自适应逆控制和-滤波LMS算法自适应逆控制方法的基础上，引入了新的变步长LMS算法，在计算量增加不多的前提下，能同时获得较快的收敛速度和较小的稳态误差；引入自适应的反馈补偿控制克服了被控系统的直流零频漂移，使控制系统在初开始工作阶段快速收敛；还引入自适应扰动消除器，它能最大限度的消除扰动。

By using this method, the angular frequency, amplitude, initial phase angle, decay constant of each component in transient voltage and/or current waveforms can be precisely extracted. Also, all other kinds of transient procedure can be analyzed by this method. Thirdly, a new definition of generalized instantaneous reactive power and generalized instantaneous reactive current in dq0 coordinates under any nonsinusoidal and unbalanced three-phase circuit is proposed for the first time. The detection and compensation method for different instantaneous reactive currents are also concerned.

本文首先提出了用于快速高精度频谱分析的一种改进快速傅立叶变换方法，该法具有速度快、精度高、抗混迭、不受采样定理约束、可以分析出谐次大于N／2的频谱系数等特点，可方便地应用于电力系统谐波分析及其它各类频谱分析；然后提出了基于非线性最小二乘优化法的电力系统暂态波形分析方法，可准确求出电力系统暂态电压、电流波形中各个分量的角频率、幅值、初相角及衰减常数，并可广泛应用于各类暂态过程波形分析。

By the proposed method, the true north value can be obtained in 10 s after gyro operates through a counting cursor to calculate the movement velocity and acceleration, and it can also compensate the low precision caused by an electronic compass.

该方法通过计算光标运动的速度与加速度值，能够在陀螺开始寻北数秒后即测量出真北值，并且能够弥补电子罗盘初寻北精度过低的问题，是全自动寻北策略的重要组成部分。

The GKS stability theorem for one-dimensional model of hyperbolic initial and boundary value problem, Trefethen's explanation and extension based on the concept of group velocity are generalized firstly. Another possible high-frequency instability mechanism in numerical realization of MTF is pointed out based on his explanation and extension, namely, coupling effect of outgoing harmonic wave along one direction and node motion in the other directions can reverse the energy propagation in multi-dimensional discrete grids.

本文概述了—维双曲型偏微分方程组初边值问题数值稳定性的GKS定理及Trefethen基于群速度概念对这一定理的解释和推广；并应用Trefethen的解释和推广指出了MTF在数值实现中可能出现的另一种高频失稳机制，即在多维离散网格中，沿某一空间方向的外行简谐波，由于与其他空间方向节点运动的耦合效应可以使能量传播方向反向。

The principle of the hot-wire air flow sensor is introduced here,the design for measurement circuit at constant current and constant temperature are expounded,the flow equations have been derived out.

热线式空气流量计是测量空气流量的一种重要工具，它起源于20世纪初，一直广泛用于流体速度测量，并且在20世纪60年代以后曾一度是流体测速领域中的主要技术之一。

We find the present Yog?s showing no remarkable progress after meditation for a whole day and night. Only after seven days of hard work, they begin to get a glimpse of the physical and mental processes and the nature of impermanent, unsatisfactoriness and insubstantiality. Most of the Yog?s take about a month and a half to reach the stage when may be believed to have attained the knowledge of the First Path and Fruition.

原文讲舍利弗听了一个偈之后就证得初果，说：我们不得不说舍利弗证果速度是很快的】我们发现今天的禅修者在整整一天一夜的禅修之后没有明显进展，而要经过一周非常勤奋地用功之后，才开始观到一点身心运行过程及其无常、苦、无我的本质。

During the active phase of labor, the average rate of cervical dilatation is 1.5 cm/hour in the multipara and 1.2 cm/hour in the nullipara.

活跃期宫颈的平均扩张速度经产妇为1.5cm/h，初产妇为1.2cm/h。。

Great chances andchallenges would be faced with the industrial layout reforming, industries lying outby rivers, transportation system progressing science and technology creating,continuous development strategy, making use of water resource comprehensively.

本世纪初我国国民经济将保持较快的发展速度，产业结构调整、沿江产业带的布局、综合运输体系的完善、可持续发展战略及科技创新、水资源综合利用程度的提高等都将给内河航运带来机遇和挑战。

The error is mainly the system error of the experiment, and the velocity measurement error is the identification of the first arrival of the primary wave and the attenuation measurement is the coupling between the sample and transducer.

对误差分析表明，本文研究中的误差主要来自于实验系统误差，其中速度观测误差来自于对首波初至点的确定，声衰减观测的误差来源于探头与样品之间的耦合状况。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。