初速度

All the satellite needs in order to move in its orbit is the initial speed given it by carrier rocket.

卫星要在其轨道上运行所需要的只是由运载火箭给它的初速度。

By improving the chemical reaction between Potassium Iodide and Hydrogen Peroxide, using initial velocity and activation energy calculation, this paper proposes and discusses the reaction mechanism in the reaction.

通过改进碘化钾与过氧化氢的反应实验，用初速度的方法，通过活化能的计算，讨论提出的反应机理，确定反应级数和催化反应与非催化反应的速度常数。

The liquor density influences the muzzle velocity and the attenuation of spray droplet s' locomotion velocity.

料液密度影响雾滴喷射的初速度和雾滴运动速度的衰减。

Numerical calculations for motions of droplets with typical diameters and different initial velocities were carried out, and some basic laws of droplets motion were found. 80μm is a dividing diameter to which terminal velocity are in different proportions of square and liner relations.

针对典型滴径及不同出口初速度的雾滴运动状况进行了数值计算，得出了细水雾雾滴的基本运动规律，确定了终端速度与滴径呈平方关系和线性关系的分界直径为80μm.2。

From the lifespan of relay point of view, a reliability criterion was provided based on dynamic characteristics of anti-forces. Mathematical model of tolerance design with reliability was set up under usage of "stress-strength interference method", taken some critical dynamic characteristics as identification objects such beginning of contact separation speed, speed of collision and gag bit impact velocity. This model showed that lower values of characteristic parameters center and quantitative descriptively relationship between tolerance and product reliability. Multi-objective optimization model of relay tolerance distribution was completed when some factors such as reliability, processing costs and its feasibility into consideration. Based on Analytic Hierarchy Process to determine weight coefficients of various objectives, and usage of simulated annealing, this study performed optimal reliable tolerance allocation of space electromagnetic relay, and then key technology segments were analyzed, accompanying its course measured by controlling chart.

从继电器电寿命的角度，基于动态吸反力特性的配合提出了继电器的可靠性判别准则；在此基础上以触点分离初速度、触点碰撞速度以及衔铁碰撞速度等关键动态特性为判别对象，采用"应力-强度干涉法"建立了继电器可靠性容差设计数学模型，给出了下位特性参数中心值及其容差与产品可靠度之间的定量描述关系；综合考虑可靠度、加工成本及加工可行性等因素建立了继电器容差分配的多目标优化模型，基于层次分析法确定了各目标的权重系数，并采用模拟退火法实现了航天电磁继电器的可靠性容差最优分配；研究了继电器的关键工艺环节，并通过控制图对其过程能力进行了分析。

The construction of a vector diagram of the change in velocity shows that the force on the earth is directed toward the sun.

知道了初速度和速度的改变，我们就可以求出行星在这个时间间隔的末时刻的速度和位置。

But in actual experimental process, the viscous force of friction has influenc in the varying degree to the measurement result when the initial velocity of the slide block is different.

在气垫导轨上做碰撞实验，最大限度地减少了摩擦阻力的影响，但在实际的实验过程中，仍发现滑块的初速度不同时，粘滞性摩擦阻力对测量结果有不同程度的影响，为此在气垫导轨上增加了电子发射装置，较好地控制滑块的初速度和测量滑块的加速度，从而减小粘滞性摩擦阻力对测量结果的影响。

The speed of the ball early solid shot hurled from the last ball the distance and time to decide, the greater the force distance, the shorter the time, the solid shot the ball the greater the initial velocity, initial velocity of shots depends on the ability of students ...

实心球出手初速度主要是由最后用力投掷球的距离和时间决定，用力距离越大，时间越短，则实心球的出手初速度就越大，出手初速度的能力主要取决于学生的

The research of lift-off velocity distribution function of saltating sand grain would redound to solve the random problem of single lift-off sand grain from sand bed and promote the combination between microcosmic researches and macroscopical researches of Aeolian sand movement.

沙粒起跳初速度分布函数的研究成果将有助于解决在错综复杂的沙床面上单颗沙粒运动的随机性问题，初步实现微观与宏观研究的结合；跃移沙粒降落速度分布函数对于反演跃移沙粒与沙床面碰撞的恢复系数，深入理解碰撞过程具有十分重要的意义，同时也将促进击溅函数的修正工作。

The velocity origins the slide stage, then it passed the transition stage to transform the velocity last spurt the release. So the transitional skill is very important during the whole throwing.

铅球的出手速度来源于运动员滑步阶段获得的速度，经过过渡阶段的转化成为最后用力的初速度，因此过渡技术的好坏在整个投掷过程中起着举足轻重的作用。

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％。