加速度

In this paper,the position accuracy improving method of the opening CNC system based on PMAC is analyzed,the servo-control algorithm which involves PID,velocity/acceleration feed forward control and notch filter and the error compensation function provided by PMAC is discussed,the pitch error compensation and the clearance error compens.

文章分析了在基于 PMAC 的开放式数控系统中提高定位精度的具体方法，对 PMAC 所提供的&PID+速度/加速度前馈+陷波滤波器&的伺服控制算法和误差补偿功能进行了阐述，将螺距误差补偿和间隙误差补偿应用于航空航天领域某型测控系统的系统误差补偿中，取得了良好效果。

Matre Andry looked up, appeared to calculate for a moment the height of the pillar and the weight of the little rascal, mentally multiplied that weight by the square of the velocity —and held his peace.

安德里老公抬起眼睛望了一会儿，好像在估量一下柱子有多高，促狭鬼有多重，再默算一下重力乘加速度之平方，然后不敢作声了。

Impact acceleration is a vital parameter to an airdropped mine system design, it has strong relation to its mechanical parts' action.

空布水雷利用击水冲击执行某些装置的可靠动作，空布全过程的加速度变化规律对系统设计是重要的参考依据。

The results show that the vehicle acceleration, the dynamic wheel load and offload factors increase with train speed, and distribute linearly. The safety of train operation and running comfort can meet the requirements when the high-speed train under secondary suspension passing through ballasted track subgrade structure. The dynamic displacement of the system is less influenced by train speed. The dynamic stress of subgrade surface increases with speed improving, and it is distributed as saddle along the lateral direction and as parabola along the longitudinal direction of subgrade surface. The dynamic stress of subgrade declines sharply along the depth of subgrade. The dynamic stress on 3 m depth below subgrade bed surface is about 16 percent of that of subgrade surface.

结果表明：车体加速度、动轮载和轮重减载率均随车速的提高而增大，呈线性分布；具有二系悬挂的高速列车通过有砟轨道路基结构时，列车的安全性及舒适度均能满足要求；系统动位移受速度影响较小；路基面动应力随速度的提高而增大，并在横向呈马鞍形分布，在纵向呈抛物线形分布；路基动应力沿路基深度方向衰减较快，在基床表面下3 m处，动应力只有基面的16%左右。

Investigated charring erosive characters of internal insulation of solid rocket motor under flight acceleration.

研究了固体火箭发动机内绝热层在飞行加速度条件下的炭化烧蚀特性。

Algorithms of the vibration signal processing included parameter method, power analysis and demodulated resonance technique.

通过对轴承工作时的振动加速度、外圈温度以及电机电流等物理量的跟踪采集及分析，来判断其工作状态。

During this age rapid progress and the explosion of knowledge, there was environmental pollution, biological collapse, the denuding of forests, the loss of morality, social chaos, bankrupt families, the flood of beastly behavior, and values based on survival of the fittest.

在时代的加速度前进下，知识爆炸、环境污染、生态崩毁、森林伐尽、伦理丧失、社会离析、家庭破产、兽性高张、弱肉强食。

It contains a single tri-axial accelerometer and conditions, digitizes and encodes the data for wireless transmission to the collector node.

它内含一个单一的三轴加速度计，并调节，数字化和编码无线发送到控制器节点的数据。

The static dimensioning has been done under 25 g, independently in the 3 directions.

根据有限元模型进行了三个独立方向的25个重力加速度下的静载计算。

Compared with reinforced concrete floor, steel deck possess the advantage of thin wall, light in mass, but owing to smallness of damp, weakness of dissipation of energy, comfort possibly dissatisfies applicability required. Therefore, this paper first calculates and analyses dynamic property of new style steel deck; according to single footfall curve, ascertaining hominine walking excitation; utilizing time-history analytical method, calculating peak acceleration response of floor slab under excitation, and analyzing peak acceleration response proceeding from different board stride, different damping ratio as well as different profile.

相对于钢筋混凝土楼板而言，虽然钢承板具有壁薄、质轻的优势，但由于阻尼小、耗能差，其舒适度可能会不满足适用性的要求，为此本文首先计算和分析了新型钢承板的动力特性；根据单步落足曲线确定了人的行走激励；利用时程分析法，计算了楼板在行走激励下的最大加速度响应，并对不同板跨、不同阻尼比以及不同板型下的最大加速度响应进行了分析，结果表明这三种因素，尤其阻尼比和板型对于加速度响应的影响较大。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！