速度

During chemotherapy both systolic maximum and diastolic minimum blood flow velocity and resistance index in renal segmental artery and interlobular artery were meaured by color doppler weekly.

于化疗中每周应用彩色多普勒超声仪监测患者肾脏血流，测定肾脏中心区域的区域动脉、叶间动脉的血流速度波形，求得收缩期最高血流速度，扩张期最低血流速度及阻力指数。

Speed is 2 kilometres per hour when one people climbs mountain , goes up the hill , speed asks mean velocity 6 per hour kilometre when going downhill?

一个人爬山，上山时速度是每小时2公里，下山时速度每小时6公里，问平均速度？

The discrete velocity ordinate method in the kinetic theory of gases is developed and applied to discretize the correspo

借助非定常时间分裂法和无波动无自由参数的NND耗散格式，建立直接求解微观分子速度分布函数的有限差分数值格式；研究并发展可用于离散速度坐标点选取和离散速度空间宏观取矩的高斯─埃尔米特无穷积分方法、等均间隔的牛顿─柯斯复合积分法、以勒让德多项式的根为积分结点的高斯─勒让德数值积分法，并应用于不同马赫数绕流模拟；通过对不同流域一维激波管问题、二维圆柱绕流问题和三维球体绕流的计算研究，并将计算结果与其他途径得到的研究结果诸如DSMC模拟值、N-S解及有关实验数据进行比较分析，创建了一套能有效模拟稀薄流到连续流不同流域气体流动问题简化的统一数值算法研究框架

Are shown. In this case not only the direction but the magnitude of the velocity, as indicated by the length of the vector, varies during the motion.

将运动加以破坏来寻求速度矢量的这个理想实验不能把它看得太认真，它只是帮助我们懂得应该把什么东西称为速度矢量，并使我们能确定出在给定时间和给定点的速度矢量。

The invention discloses a vehicle speed matching method based on linear array CCD image, including the following steps that: two linear array CCD video cameras are respectively arranged on two sections positioned on a road at intervals; both linear array CCD video cameras face downwards and are provided with infrared ray laser source; the frame rate of each CCD video camera is more than 1,000 frames per second, and the resolution is more than 1,024 lines; correlation matching computation of the image sequences obtained by both linear array CCD video cameras is carried out to obtain the time difference of the same object in two image sequences; finally, by means of the time difference and the distance between both cameras, the driving speed of an object vehicle can be obtained according to the velocity formula V=s/t.

本发明公开了一种基于线阵CCD图像的车辆速度匹配方法，该方法在道路相距一定距离的两个断面上分别安装两个线阵CCD摄像机，两个线阵CCD摄像机指向垂直向下，线阵CCD摄像机上配有红外线激光源，线阵CCD摄像机的帧速率大于1000帧/秒，分辨率大于1024线；对两个线阵CCD摄像机得到的图像序列进行相关匹配计算，从而获得同一个目标在两个图像序列中的时间差，利用该时间差和两个摄像机的距离，根据速度公式V＝s/t即可以得到目标车辆的行进速度。

Those problems include inverse position analysis of the machine, inverse and direct position analysis of the parallel locking mechanism, relationships of velocity and acceleration between cutter and actuators, Jacobian matrix of the machine, forward position computation of the machine, the links'velocity and acceleration of the driving chains, the links'velocity and acceleration of the locking mechanism, kinematics simulation of the machine, and so on. The Jacobian method presented in the thesis to calculate the direct position of the machine is of high efficient.

其中包括机床的位置逆解分析，平行机构的位置逆解分析，机床刀具与各主动关节之间的速度和加速度映射关系的求解，并联机床雅可比矩阵的计算，并联机床的位置正解计算，支链构件的速度和加速度计算，平行机构各构件的速度和加速度计算以及机床各运动学指标的仿真计算等。

Directed against the designed parallel welding head mechanism of IC chip pasting machine,the movement equation was established,the positive solution of motion equation was presented,and the positive and reverse solutions of velocity and acceleration were derived.

高速高精度IC芯片粘片机是IC芯片封装的主要设备之一，其粘片速度已超过10 000次/h，定位精度达微米级，而且粘片速度和定位精度有越来越高的趋势[1]，但目前国内外IC芯片粘片机的焊头机构都采用串联结构的形式，运动部件的惯量很大，不利于粘片速度和定位精度的提高。

Ort-III C7600 as an example, its color business card printing, copy speed 60 pages per minute, black-and-white output speeds up to 75 pages per minute; the unique combination of high speed scanning component can synchronize completed scan double-sided documents in black and white, the black and white scanning speeds up to 100 pages per minute; new high capacity paper tray holds 5260 piece of paper and optional flat nails, horse-riding nail omniberaing bookbiding, process all kinds of mass file will produce a report into a volume.

ort-III C7600为例，其彩色制卡、复印速度为每分钟60页、黑白输出速度高达每分钟75页；其独特的高速扫描组件可同步完成黑白文件的双面扫描，令黑白扫描速度高达每分钟100页；新品的大容量纸盒可放置5260张纸，可选平钉、骑马钉等各种装订器，能迅速处理各式海量文件并制作成册。

In this article, the wave of cutting speed is described as the deviation of mean square and the maximum deviation of speed during the working stroke.

本文用工作行程中速度的平均平方偏差及最大速度差来描述刀具速度波动，并以此为评价函数，采用多目标优化设计方法，确定牛头刨的主传动拉杆尺寸。

In isotropic medium the wave velocity of these two types of wave is identical; however, their vibration characteristics are different.

实验测试表明无偏振特性的扭转波在各向异性介质中传播时也会出现两种速度不同的扭转波，速度值与剪切横波的快慢横波速度值一致。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷