加速度

The characteristics of destruction and ground motion of the earthquakes in these regions are similar to those of meizoseismal areas of past earthquakes.

近期国内外诸多强烈地震的实际资料和相关研究成果表明，直下型地震不仅地震峰值加速度大，且竖向和水平峰值加速度比值也有别于远场地震的统计关系。

For the sake of insuring the precision of accelerometer in SINS, the static output characteristic of the CHJN-2A quartzose flexible accelerometer has been studied.

为了确保捷联惯导系统中加速度计的性能，研究了CHJN-2A石英挠性加速度计的静态输出特性。

At first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu-lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band-pass filter, alternating amplifier, phase sensitive demodulatorn, pulse-width modulation, frequency scale circuit, moment current generator. Finally, using the graphics program language LabV-IEW which is designed for testing field especially by NI accomplishes the solfware design of testing system,realized the testing functions.

首先对加速度计及其测试技术的发展历史和现状，液浮摆式加速度计的工作原理和数学模型等作了简要的介绍，然后确定了以二元调宽脉冲再平衡测试回路为设计方案，并从控制理论的角度进行了分析，着重研究了系统中各部分的传递函数，利用系统开环传递函数分析了系统的稳定性，同时设计了系统的校正网络；分析了二元调宽脉冲再平衡测试回路的分辨率、采样约束以及测试精度等基本问题，并按照系统分析的结果设计了包括前置放大、带通滤波、交流放大、相敏解调、脉宽调制、频标电路以及力矩电流发生器等测试系统各部分硬件电路，验证了电路的正确性，最后按照测试系统的要求，采用了美国NI公司专为测试领域所开发的虚拟仪器工具——LabVIEW作为测试软件开发工具，利用该图形化编程语言完成了测试系统软件部分的设计，实现了测试功能。

The amplitude of acceleration parallel to tractional direction is about ten times as that of acceleration in vertical direction for test points on soil.

地基中测点平行于牵引方向的加速度幅值大约是垂直牵引方向的加速度幅值的10倍。

Based on Current Statistical Model for target tracking, a modified maneuvering target model and adaptive filtering algorithm is presented by acceleration and the relation between maneuve trix of process noise.

在&当前&统计模型的基础上，通过修正目标加速度的概率分布、机动加速度与方差的自适应关系及过程噪声协方差矩阵，提出了一种修正的机动目标模型及其自适应跟踪算法。

This was caused by a faulty API call ("SystemParametersInfo") which unintendedly enabled mouse acceleration even if it had been disabled previously.

这是由一个预料之外的激活鼠标加速度的API导致的，鼠标加速度曾经被取消也是一样

The measured value of unmodelled acceleration for Cassini is (26.7 ± 1.1)× 1010 m/s2, roughly three times as large as the Pioneer acceleration.

卡西尼号的额外加速度是(26.7 ± 1.1)× 1010 米/秒2 ，大致为先驱者号加速度的3倍。

The basic principles of the combined control and equivalent combined control were described, the random acceleration model of maneuvering object was also analysed and how to realize the Kalman lilting was given in the paper.

阐述了复合控制及等效复合控制技术的基本原理，分析了机动目标的随机加速度模型，给出了卡尔曼滤波预测算法的实现过程，并在假定目标满足随机加速度模型的基础上，建立了基于卡尔曼预测滤波技术的光电经纬仪的等效复合控制系统。

An airdropped mine's acceleration built-in measurement system based on this proposed algorithm had been built. Test results showed that it worked well and could be used for other dynamic measurement applications.

利用此算法设计的空布水雷加速度测试仪，经模拟、空投等试验，可靠、准确获取了水雷在空布过程的加速度变化规律，该算法也可以应用于其它动态参数测试系统中。

Based on the principle of electrostatic levitation ,the seismic mass is levitated and feels the acceleration.

本工作针对一种新型的电容式力平衡加速度计－微型静电悬浮Z向加速度计进行了计算机模拟。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失