速度

Hydraulic poppet valve ; Flow field ; Finite element method ; Velocity ; Streamline

液压锥阀；流场；有限元法；速度；流线

With the passing of time, this adaptating capacity has made this dog very versatile as regards functions; it has proved to be a noble companion and a loyal and insurmountable protector of those it loves. Its strength, tenacity, sharp sense of smell and bravery make it the best dog among those used for hunting wild boars, peccaries, pumas and other country predators which can be found in the vast and heterogeneous areas of the Argentinean territory.

阿格斯丁在《杜高犬的历史》里面回忆里说：就好像昨天发生的事情一样，我仍然记得那天，我哥哥安东尼奥第一次告诉我他的想法：培育出一种新品种犬以进行大型狩猎，他打算利用有着非凡勇气的科多巴斗犬，再混以其他品种以给予身高、好的嗅觉、速度、狩猎本能、还有其他一些以除去跟其他狗搏斗的欲望，这种欲望会使他们在群猎时毫无用处。

The paper provided an effective method of estimating project and improving working characteristic of loading mechanism through making mathematics model and simulating curve of track and rate and acceleration and pawls power.

通过建立适当的装载机构数学模型，模拟单、双耙爪爪尖的轨迹、速度、加速度、耙取力曲线，并且通过改变转盘速度对轨迹各段的速度、加速度、耙取力的特性进行研究，为评价设计方案、改善装载机构性能提供一种有效的手段。

Team officials chose the Pacers name because the organization wanted to set the "pace" in professional basketball.

球队官员选择了步行者名称，因为该组织希望以设定&速度&，在职业篮球。

The velocity data are normalised by the tip velocities, Utip =ND, at each impeller speed.

速度 数据标准化的尖端速度，Utip =？钕，在每叶轮速度。

The rate gyro feedback provides positive dynamic stability and well-damped transi t response to commands or disturbances.

速度 陀螺反馈提供正向动力学稳定性和对于指令式扰动的很好阻尼的瞬时响应。

Exclusive use of a small handkerchief leading a full set of professional cleaning equipment, crystal lamp, crystal lamp with German imported special cleaning ingredients, the leading non-removable particles low pressure spray cleaning method of degaussing Quick-drying, quick-drying on the washing crystal lamp degaussing work, the entire process is completely lamps instead of demolition to ensure that lamps intact, delicate detailed in-depth security, no matter how high, how complicated, can be "accurate, professional, and speed."

小手帕独家采用国际领先专业水晶灯全套清洗设备，配合德国进口专用水晶灯清洗配料，国内领先的无拆装低压微粒子喷射消磁速干清洗方式，对水晶灯进行清洗速干消磁工作，整个过程完全无须拆卸灯具，保证灯具丝毫无损，精致入微的安全，不管多高，多复杂，都可以做到&精确、专业、速度&。

Compared with free field, after setting up a pile body, the displacement, velocity, acceleration of pile head are obviously reduced, this proved that the existence of pile arrived the effect of reducing the earthquake effect.

较之自由场，设置桩体后位移、速度、加速度明显减小，说明桩身的存在起到了隔震减震的作用。

Abbr. V Physics A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.

缩写 V 速度：一种向量，其量值为物体的速率，其方向为物体运动的方向

Finally, based on the theory of Timoshenko beam, a beam model of this crankshaft is built, which is compared with solid model. The results indicate that this beam model can meet the needs of calculation precision and calculation efficiency. With this beam model, the condition in which real loads are put on the crankshaft is simulated. The displacement curves、velocity curves、acceleration curves of the main journals and the pulley of this crankshaft and torsion vibration curve of the pulley are then gained. With these curves, the dynamic characteristic of the crankshaft is analyzed. The conclusion indicates that this crankshaft has good dynamic characteristic.

最后利用Timoshenko梁理论建立了曲轴的梁单元模型，将此梁单元模型与体单元模型进行了比较，结果表明梁单元模型能够满足精确度和计算效率的要求；利用该梁单元模型，模拟了实际条件下的载荷作用时曲轴的响应，得到了曲轴各主轴颈和皮带轮端的位移、速度、加速度曲线以及皮带轮端的扭转振动曲线，分析了曲轴的动态特性，结论表明该型曲轴具有良好的动态特性。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。