那平均加速度到底是多少呢？
求在这段时间间隔内平均加速度的数值。
Find the magnitude of the average acceleration during the interval.
所以在撞击的过程中,平均加速度,只有。
So therefore the average acceleration during the impact 5/ divided by one quarter...
所以如果把它代进来，会得到一个，小于0的平均加速度。
So if you substitute that in there you get an average acceleration which is smaller than zero.
角度在时刻t1到t2的过程中，增加了2，故平均加速度大于，看看这个角度。
The Angle increases, 2 so in our case from t1 to t2 0 the average acceleration is larger than zero Look at the Angle.
即便血压升高得不多，也容易引发偏头痛、恐慌症以及骨质疏松症，而圣诞购物者的心跳平均加速10%。
Even low levels of hypertension are linked with migraines, panic attacks and osteoporosis. Heart rates increased by an average of 10 per cent during Christmas shopping.
即便血压升高得不多，也容易引发偏头痛、恐慌症以及骨质疏松症，而圣诞购物者的心跳平均加速10％。
Even low levels of hypertension are linked with migraines, panic attacks and osteoporosis. Heart rates increased by an average of 10 per cent during Christmas shopping.
在t1和t2之间的，这段平均加速度2，等于t2时刻的速度2，减去t 1时速度，再除以。
The average acceleration 2 between time t1 and time t2 2 would then be the velocity at time t2 minus the velocity at time t1, divided by t2 minus t1.
所以速度的符号,和平均加速度的符号,这二者都取决于,这里x正方向,是如何定义的,和0点的选取没有关系。
So the signs in the velocity and the signs in average acceleration depend crucially on how I have defined my increasing value of x not where I choose my zero points.
可是如果考虑到,和t5之间的平均加速度5，between，t1，and，t5,那么它将小于,因为这里速度为,但是到了这里却是负值。
However, if you take the average acceleration t1 0 that is smaller than zero 0 because here the velocity is zero but here the velocity is negative.
通过比较台面上不同部位上几个关键结点耦合前后平均加速度值的变化，计算出了各个频率下的附加质量，并对附加质量给振动台设计带来的影响进行了研究。
Comparing with the accelerations of two different conditions, additional masses are calculated. At last, the influences carried by additional mass during the designing of vibration table are analyzed.
研究人员估计，西南极洲冰川的加速流动在已观测到全球平均海平面上升中所起的作用约占10％。
Researchers estimate that the accelerating flow of glaciers in West Antarctica is contributing about 10% of the observed rise in the mean global sea level.
春天的温暖气温加速了所有的植物生长周期，包括未感染的作物和非作物植物，所以大部分地区的植被状况都低于平均水平。
Warm spring temperatures helped speed the growing cycle of all plants, including uninfected and non-crop plants, so vegetation conditions were below average across much of the region.
而且这不是假设。专家一致认定吸烟加速衰老，平均而论，烟民比同龄非烟民长相老1.4岁左右。
And show up they will. Experts agree that smoking accelerates aging, so that smokers look 1.4 years older than nonsmokers, on average.
一天之内相当长的一段时间的温度可能高于平均温度——而疟原虫的生长可能加速。
For a substantial part of the day temperatures might be much higher than the mean - and the parasite's development would accelerate.
目前为止，是关于速率，平均速度和加速度。
All right, so far, about speeds and average velocities and accelerations.
把这一标准差和两次的平均值相比较，我们就能发现他们很相像，（因为我们知道重力加速度是个常数）。
Comparing the ratio of standard deviation to the average for these two distributions shows that they are similar.
高中毕业生的平均周收入以加速度增长，从1985年的40美元快速增至2005年的140美元。 。
Thee average weekly income of high school graduates increased at accelerated speeds, rising from $40 in 1985 to $140 in 2005.
设粘弹性板的轴向运动速度为常平均速度与简谐涨落的叠加，建立轴向加速运动粘弹性矩形薄板的运动微分方程。
The axially moving speed is a simple harmonic fluctuation about a constant mean speed, the differential equation of motion of axially accelerating viscoelastic plate is established.
外特性试验的平均净化率达87.5%，负荷特性试验的平均净化率为85.2%，自由加速时的净化率为80%。
The average efficiency of (cleaning) can arrived at 87.5% in the WOT characteristics, 85.2% in load characteristics and 80% in free accelerate (experiment).
但亚行的经济学家表示，亚洲地区需要紧紧地盯住通胀。他们预计今年的通胀将会加速至6.3%，比过去10年平均通胀率的两倍还要高。
But the bank's economists said the region's focus needed to be firmly on inflation, which they expect to accelerate to 6.3 per cent this year, more than double the past decade's average.
平均速度——时间图表可以给出这个自由落体的重力加速度。
A graph of average speeds versus time can give the acceleration due to gravity of the falling object.
DC SC超导光阴极注入器将直流光阴极电子枪和超导加速腔结合在一起，其特点之一是适合于提供高平均流强电子束。
The precept of DC-SC photoinjector is to combine a DC photocathode electron gun and the superconducting cavity together. This scheme is specially adequate to provide the high average beam current.
加速度计的偏置误差形成一平均的常值偏离加上一振荡分量。
The accelerometer bias errors result in an average constant offset plus an oscillatory component.
将栅栏的加速度的平均值记录在数据表中。
Record the value for the Mean of the acceleration of the picket fence in the Data Table.
通过波流相互作用和无加速定理的讨论以及相应的数值分析，本文介绍有关纬向平均西风变化的近期研究成果。
On review of the theories of wave-mean flow interaction and non acceleration, theorem, and the corresponding numerical analyses, the dynamical mechanism of variation of westerly index is discussed.
随着轨道偏差的增大，橇车平均冲击加速度和平均冲击力近似呈线性增长；
The average impact acceleration and average impact stress of sled train increase approximately in a line with the increase of track deviation.
而且尽管他们的平均收入还很低，其中产阶级却加速扩展，造就了一个广阔的新市场。
And although their average incomes are still low, their middle classes are expanding fast, creating a vast new market.
将多次曲线平均温度计算模型的应用于加速冷却过程控制系统，结果表明系统控制精度得到较大幅度的提高。
When the new model was applied to accelerated cooling process control system, the control accuracy of cooling system was improved apparently.
将多次曲线平均温度计算模型的应用于加速冷却过程控制系统，结果表明系统控制精度得到较大幅度的提高。
When the new model was applied to accelerated cooling process control system, the control accuracy of cooling system was improved apparently.
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