速度

Based on indoor measurement of rock acoustic velocity,drillability, rigidity ,uniaxial compressive strength,the relationship between acoustic velocity and fragmentation parameters of rocks and that between the surface acoustic velocity and the underground mine logging acoustic velocity were explored by regression analysis.

在室内测定岩石声波速度、可钻性、硬度、单轴抗压强度试验的基础上，利用回归分析方法，探索声波速度与岩石机械破碎性能参数之间、地面声波速度与井下测井声波速度之间相关关系，建立了利用测井声波速度预测地层岩石机械破碎性能参数的数学模型，介绍了预测剖面及资料验证结果，并将这一方法用于计算PDC钻头可钻性以及中国南方海相碳酸盐岩地层的岩石力学参数。

Laser Doppler Anemometry was used to measure the velocity in volute and impeller of the pump. Three velocity components magnitudes were obtained, so was the mean square root fluctuating value.

运用激光多普勒测速仪，对旋流泵最优工况下的无叶腔及叶轮内部速度场进行了测量，得到周向速度、轴向速度、径向速度及其对应的均方根脉动速度分布等。

2 X User Defined Acceleration Range, 0-XXX-0, Maximum Velocity, Average Velocity, Peak Longitudinal Acceleration, 2 x User Defined Deceleration Range, Time to and Speed at (100m, 200m, 400mm, 1km, 1/8mile, 1/4 mile, 1/2mile, 1mile), BHP, Power Losses. Minimum apex speed.

0-60， 0-100， 2 x用户自定义的加速范围，0-XXX-0，最大速度，平均速度，最大纵向加速度，2 x用户自定义减速度范围，以时间为基准及到100m， 200m， 400mm， 1km， 1/8mile， 1/4 mile， 1/2mile， 1mile时的速度，BHP，功率损失，最小峰值速度。

Researches show that the drive force characteristics of the electric tractor drive system based on series DC motor is close the ideal characteristics, the curves are concave, low speed with constant power, and high speed with constant torque; the electric tractor has large working speed under different shifts, but the extensive coincidence speed shows that the variable ratio of the gear is unreasonable; the maximum climbable gradient of this electric tractor is more than 30%, and does not need frequent shift when working for its extensive climbable gradient; there are many influence factors of continuous working time, which the more obvious factors are working speed and working load, the working time increases with the increase of the working speed and working load.2. Simulation researches on the drive characteristic of the electric tractor.

研究结果表明：基于串励直流电动机(来源：ABC21论文网www.abclunwen.com)的电动拖拉机电驱动系统的驱动力特性场接近理想驱动力特性场，其各挡下的驱动力特性是一组下凹的曲线，低速恒转矩，高速恒功率；同一行驶速度下所对应高挡驱动力大于低挡驱动力，这是由电机的调速特性决定的；电动拖拉机各个挡位下具有较广的稳定作业速度范围，但是各个挡位之间速度重合的范围较多，说明所用变速箱变速比与电动机匹配不合理；电动拖拉机最大爬坡度达到30%以上，并且各挡爬坡度变化范围较广，作业过程中不需要频繁换挡；影响电动拖拉机连续作业时间的因素较多，其中作业行驶速度和作业负荷影响最为明显，作业负荷越大，连续作业时间就越短，作业速度越快，连续作业时间就越短。2、电动拖拉机驱动特性仿真研究。

Speed functions: current speed, average speed, maximum speed, and speed comparator

速度功能：目前的速度，平均速度，最大速度，速度比较

Studies have suggested: Of every joint curve, the pace of hip joint is smaller and not changing much; The paces of knee joint , ankle joint and tiptoe are obvious in curvilinear motion; Knee joint up to the peak value of pace early , then moderate , ankle and tiptoe nearly reach the pace maximum at the same time during the course of proposing the knee, later dropped rapidly, the tiptoe pace increased but not reached the maximum again at the time of hitting the target.

研究表明：各关节曲线中，髋关节速度较小且变化不大；膝关节、踝关节和脚尖的速度曲线变化明显；膝关节较早达到速度峰值，然后减速，在提膝阶段踝和脚尖几乎同时达到速度最大值，之后迅速下降，在击靶瞬间脚尖速度又增大但没达到最大值。

Based on characteristic of chinese handwritten signature, some programs are developed to acquire the dynamic handwritten signature data from WACOM Tablet and to calculate velocities from acquired dynamic data. Based on statistics theory, instantaneous velocity and average X velocity and average Y velocity and time when the first maximal velocity arriving during on-line handwritten signa...

根据汉字手写签名的特点，编程从手写板获取签名的动态数据，编写了提取手写签名多种速度特征值的程序，在统计的基础上，对手写签名过程中的瞬时速度、X轴向平均速度和Y轴向平均速度、最大速度出现的位置、极大速度首次出现的位置等特征量的稳定性进行了实验研究，得出了一些有用的结论。

Regarding the speed along with the displacement even change's uniform non-uniform linear motion, its acceleration should define like this: At the unit displacement the speed change (the physics significance is: The speed along with the displacement change "the speed"), like this has:, the acceleration unit should be , Expression speed change which causes in proportion to as a result ,of the speed action of force.if the final velocity is 0, acts according to , namely .

对于速度随位移均匀变化的匀变速直-运动，它的加速度应该这样定义：在-位位移上速度的变化（物理意义是：-速度随位移变化的"快慢"），这样-有：，加速度的单位应该是，表示由于正比于速度的力作用而引起-速度的变化，其中。如果末速度为0，则根据，即。

The results show that Irgacure1000 is preferable in the system and the rate is highest when the amount of Irgacure1000 is 3%;the drying condition has a considerable impact on the rate ; it decreases with the increase in neutralization degree;when NaOH is used as neuralization agent,the rate at the later period is higher than that when triethyl amine used; the structure of polymer has a certain effect on the rate and it accelerates with the increase in the ratio of PBA/DMPA and HEAD/DMPA.

结果表明，本体系优选光引发剂Irgacure1000的质量分数为3%时固化速度最快；干燥条件对光固化速度有很大的影响；随着中和度的提高，固化速度下降；用NaOH作为中和剂时，后期固化速度快于用三乙胺；聚合物结构对固化速度有一定的影响，随着PBA/DMPA和HEA/DMPA比例的提高，固化速度加快。

The law was alike between initial stage and the peak of growth, but the rates reaching maximum of negative and positive were in the different soil depths , and the inflexions of increment anti decrement by degrees were also different. The soil water content in terminal stage increased positively, and in surface reached the maximum, but decreased with the depths, except a little increment in the depth of 460~600cm.

年生长季内，不同生长时期，土壤含水量变化的速度不同，生长初期和生长旺季的规律相似，但速度出现负的最大和正的最大所在的土层深度不同，速度递增和递减所在的土层深度也不同，生长末期速度均为正值，表层最大，随土层深度的加深，速度递减，但到460~600 cm处速度略有增加。

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％。