初速度

The simulated results show that when muzzle velocity is zero the cumulative error induced by acceleration of 0.6g can be up to 2.5 nm in 0.4 s, which is not negligible in nanometer measurement.

仿真结果表明，在0.4s时间内0.6g加速度所引起的累积误差可达2.5 nm左右，这对于纳米精度的测量是不应忽视的；初速度不为零时加速运动会引起更大的误差，而减速运动所引起的误差则相对小。

By investigating the effect of all the factors, including particle size, density, elastic deformation coefficient, Hamaker constant, surface energy, yield limit and relative velocity, on the particle behavior in the process of collision, the rule of collision and agglomeration with the change of these factors is obtained in detail.

为考察包括颗粒的粒径、密度、弹性变形系数、Hamaker常数、表面能、屈服极限和碰撞初速度等众多因素对碰撞规律和团聚趋势的影响，本文采用"数值实验"方法，获得了碰撞力与范德华力的相互关系、碰撞弹性回复系数和团聚趋势随各参数的变化规律。

The existing 90mm ammunition would not reliably penetrate the Panther glacis plate at ranges over 500 yards.

另外一个佐证， 90mm高炮的M77弹，初速度853m／s，与后期M82应该差不多，也在600码处击穿了豹式首上。

Our results show that the behavior of the object in granular medium depends on its initial velocity.

研究结果表明，物体在颗粒介质中运动行为与物体的初速度有关。

The utilization of the 1981 IRRDB Hevea germplasm is very slow in China. For further characterization and evaluation of the germplasm, an analysis was made to evaluate the characteristics of latex regeneration and latex flow of the new Amazon Hevea germplasm by the method of latex diagnosis. Nine accessions of the germplasm were determined in terms of physiological parameters such as yield, initial flow rate, plug index, sucrose, thiols, phosphorus, magnesium, etc, with RRIM600 as the control.

我国橡胶树新种质创新利用进展缓慢，为了深入全面的鉴定橡胶树新种质，加速其利用进程，笔者采用胶乳诊断方法，测定分析了1986年定植于大田鉴定评价圃的14份橡胶树新种质与产排胶密切相关的干胶含量、干胶产量、排胶初速度、堵塞指数及胶乳硫醇、无机磷、蔗糖及镁离子含量等生理参数。

Whether sand can saltate from sand bed surface and quality of sand incipience are very important to the sand transport and the form of wind-blown-sand. The quality of sand incipience involved with many kinds of parameters, such as incipient velocity, incipient angle etc.

沙粒能否起动以及起动质量如何，如起动初速度、起动角度等参数都直接关系到沙粒的输运和风沙两相流形成。

So how to improve the initial velocity becomes the key to the question during the process of shot putting.

因而在投掷过程中，如何提高铅球的初速度就成为了技术的关键。

Two small solid spheres of mass m are thrown at the same time with the same initial velocity v and angle .

两个小的实体球质量为m，以同样的初速度v和角度同时抛出。

In this paper,the inlet condition of core shooting process has been studied with a high-speed digital camera,and the initial velocity of sand flow has been measured.

本文利用高速摄影的方法，对射砂过程的初始条件进行了研究，得到了砂流在射入芯盒时的初速度。

While the initial velocity is large, the object makes an oscillation damping movement in the granular medium.

研究发现，物体在上升过程中所受到的阻力也与物体的初速度有关。

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％。