瞬间速度

这样，虽然瞬间速度物理真实存在，很困难去计算，因为缺乏精确定义。

Thus , although instantaneous speed is a physical reality , there is difficulty computing it for lack of a precise definition .

这些分布图显示随着颗粒到达出口上方的瞬间速度的不同，颗粒堆积区的密度和高度均会改变，并最终导致颗粒流流动状态的改变。

The distributions show that the density and the thickness of the granule accumulation above the exit vary with the incoming granule velocity , and the variation plays a key role in determining the final granular flow state .

在飞机悬挂物地面投放试验中，为了测试悬挂物离机的姿态（瞬间速度、旋转角度、位移），利用光电检测原理设计了一种飞机悬挂物离机姿态测量装置。

In the ground throw test of plane suspender , in order to test off-plane pose ( instantaneous speed , rotary angle , displacement ) of suspender , a sort of measurement device of off-plane pose of plane suspender is designed by the use of photoelectric survey theory .

最后的这步使温度能非常接近极限温度，即绝对零度。互联网成功的，用接近瞬间的速度传送着信息。

This last advance permitted a very close approach to the limiting temperature of absolute zero .

通过对击球瞬间挥拍速度与被击出的球飞出距离的关系进行了实验研究。

The relationship between the instant speed of swing during smash and the bounce distance of the ball hit were studied by experiment .

因为，如果真有这个实体，它在一瞬间的速度和位置应该是可以同时知道的&它必定在某一个点上。

If there is real substance , both its velocity and position should be able to fix at the same time & it must exist at a certain point .

反应釜配有安全阀，安全阀采用爆破膜片，爆破数值误差小，瞬间排气速度快，安全可靠。

The reaction kettle equipped with safety valve , that used of blasting diaphragm , blasting by blasting numerical small error , instantly exhaust fast , safe and reliable .

在滑步阶段中，魏萍和姜梦俏右脚着地瞬间铅球速度小于右脚着地瞬间身体重心速度。

In slides at the step stage , the instantaneous shot speed of right foot of Wei Ping and Jiang Meng is smaller than that of their right foot which is well-grounded the instantaneous bodily center of gravity speed .

通过高速相机测量位移，利用卡尔曼滤波计算速度的方法，解决了雷射脉冲瞬间作用时速度随机起伏大和计算困难的问题。

From the proposed testing and calculation method , the problem of velocity random fluctuating phenomenon owing to test data fluctuating is resolved .

两辆列车都以260英里的时速对开，在交叉的那一瞬间，相对速度就达到了520英里每小时。

Each of the two trains was travelling at260 miles per hour but when they crossed , their relative speed was 520 milesper hour .

用测量扣杀时球飞出距离来推算击球瞬间的挥拍速度，作为一种简便方法是可行的。

It is a simple and feasible method to calculate the instant speed of swing during smash by measuring the bounce distance of the ball .

起跳作为跳远运动各项技术环节中最为重要的环节，它决定了人体腾空瞬间的运动速度和运动方向，进而决定了跳远成绩的好坏。

Takeoff is the most important technique among the others , set the body 's speed and direction at the lifting moment and proceeds to determine the distance of the long jump .

因此不能单纯的看水平速度的转化率来判断起跳效果，还要结合双脚离地瞬间重心垂直速度值。

Therefore , in judging the jump effect , one must not only take into consideration the horizontal velocity but also the gravity center vertical speed at the very moment of feet takeoff . 6 .

从理论上说手指柔韧度好则会增加或者延长球出手时的用力时间，增加用力过程对球的作用时间及球离手瞬间的角速度，这对于提高投篮命中率的是必不可少的因素。

Theoretically speaking , finger flexibility will increase or prolong the ball out hard time increased force on the ball time ball in hands isolated instantaneous angular velocity , which is an essential factor to improve the hit rate .

建立行星传动起升机构电动机飞车的模型，计算电动机失电后各瞬间重物的速度、加速度，电动机的转速，从而分析事故的原因。

A model of motor burst in hoisting mechanism with planetary gear reducer is set up and the speed and the acceleration of the instantaneous load as well as the rotational speed of motor are calculated after the motor failed so as to analyse the causes of accident .

根据输出的电流及其积分电量可计算金属在气体中的瞬间及平均腐蚀速度。

Based on the cell current and its accumulated quantity the mean or instantaneous corrosion rates of metals in gases can be measured and recorded continuously .

在现场采用刷涂镍铜合金处理后，测得风机启、停瞬间轴承箱振动速度最大为3.1mm/s，符合要求。

Having coated Ni-Cu alloy on site , the measured maximum bearing case vibration speed was 3.1 mm / s at the moment of fan start and stop , which satisfied the requirement .

助跑最后一步摆动腿着地时，其小腿支撑扇角对踏板前的身体重心下降、水平速度以及离板瞬间的重心垂直速度有重要影响。

The legs ' supporting angle of sector in the last step of run-up before the take-off has much effect on the drop of body center , horizontal speed and vertical speed in broad jump .

少年女子跳远运动员在起跳离板瞬间的重心垂直速度和重心腾起角都在标准范围内，而其和高水平运动员相差无几，这个应该是她们的优势和特征。

The gravity vertical speed and gravity flight angle of juvenile female long jumpers at the moment they take off the board are both within the standard scope , approximated to high level long jumpers , which are their advantages and traits .

结果发现，倒一步离地瞬间身体姿态、有效控制水平速度的转化和增加离地瞬间重心垂直速度，是提高我国男子跳高成绩的重要保证。

The results indicate that the body posture at the instant of take off , effectively controlling the transform of horizontal velocity and increasing the vertical speed of weight at the instant of take off are the important guarantees for improving the performance of men 's high jump in China .