速率保持不变，但速度矢量会发生变化。
The speed is not changing, but the velocity vector is changing.
谈话测试能够反映出锻炼者的跑步速度、心跳速率，能感觉出锻炼强度是否过高。
Running speed, heart rate, and ratings of perceived exercise intensity were all well correlated with the talk test results.
因此，我们可以用星星的自转速度及速率作为衡量它们年龄的计时器。
And so we can use the spin rate, the rotation rate of a star, as a clock to measure its age.
除了操作之外，这些命令还包括其他参数，例如频道数(0-15)，音符的音调(0 - 127)以及按键的速度(速率)。
In addition to the action, the command includes other parameters such as a channel number (0-15), note pitch (0-127) and the speed a key was depressed (velocity).
速度的平方为速率。
其中，速度表示星系后退的速度，H0为哈勃常数，也即宇宙膨胀速率的参数，而距离指的是星系与相比较星系之间的距离。
H0 is the Hubble constant, or parameter that indicates the rate at which the universe is expanding; and distance is the galaxy's distance from the one with which it's being compared.
物理中速率和速度的概念,是泾渭分明的。
There is a very big difference in physics between speed and velocity.
您可以把速度理解为这个过程曲线的变化速率，或者是待完成工作增长或者收缩的速率。
You can think of velocity as the rate of change in the progress curve, or the rate of growth or shrinkage of the Backlog.
比特币的货币供应以平均每小时300单位货币的速度增加，但每隔四年速率将降低一半。
The Bitcoin supply increases at a rate of 300 coins every hour on average at the moment, but every four years that rate will fall by a half.
因此即使速率不变，也就是说速度矢量的的大小不变，但它的方向可以做旋转。
So, even if the speed is constant, that means, even if a length of the velocity vector stays the same, the velocity vector can still rotate.
速度因素涉及每个客户机需要的每秒比特速率。
The "how fast" factor involves the bit rate per second required for each client.
若速率恒定，那么速度当然会变化，因为方向时刻是变化着的，但是速率没变。
If the speed doesn't change, then the velocity, of course, does change because the direction changes all the time, but the speed does not.
速率是速度矢量的大小,因此速率一般，都是正值。
Speed is the magnitude of the velocity vector and the speed, therefore, always has a positive value.
因此平均速率,是4。,但是平均速度是。
So the average speed 5m/s is 4.5 meters per second, 0 but the average velocity is zero.
他们检测了大脑尺寸相对于体型的发育速度，以观察在这6000万年间，其速率是否产生了任何变化。
They examined the growth rates of the brain size relative to body size to see if there were any changes in the proportions over time.
因此，100m/s是，最高的速率,而之前的那个速率则小些,然而同时，下面这个也是最小速度。
So this has the highest speed, of 100 meters per second and this has a lower speed but this has the lowest velocity.
更令人称奇的是，鉴别的精确率即使在每50毫秒一张的速度下也一样高，这样的播放速率使参与者根本没有机会思考图片。
Even more surprisingly, accuracy rate was just as good when the images were exposed at a rapid rate of only 50 milliseconds, which offered participants no opportunity to consciously process the photo.
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.
事实上在那一点存在一个侧向的加速度，即使它的速率没改变。
And, in fact, there is a sideways acceleration at that point even though the speed is not changing.
在我们最先的解决方法，FPS基于固定的游戏速度，在低速的硬件下会有问题，游戏速度和帧速率都会有丢失。
Our first solution, FPS dependent on Constant game speed, has a problem when running on slow hardware. Both the game speed and the framerate will drop in that case.
而MIT的科学家们指出，其实情况并没有那么糟糕，因为大多数对互联网接入速率的评估方法都低估了真实接入速度。
But it might not be that bad after all, MIT researchers say — most Internet measuring methods underestimate the speed of the access network.
好，既然我们已经知道点的位置，它是一个关于时间的函数，我们就能了解，它在诸如速率或加速度的量中是如何变化的。
OK, so, now that we know the position of the point as a function of time, we can try to study how it varies in particular things like the speed and acceleration.
你吃了什么并不直接反映你代谢的速率。而摄入的总能量和你的体育活动总量，这些才会加快的减肥速度。
What you eat won't likely directly impact the speed of your metabolism -- it's the total number of calories and your level of physical activity that will speed your weight loss.
一个可行的解决办法是保持更新的速度，而减少渲染的帧速率。
A possible solution for this could be to keep updating the game at that rate, but reduce the rendering framerate.
而他们所推崇的一种假说认为热带地区的温度更高意味着化学反应发生的速度更快，因此生物代谢的速率也更快。
The one they favoured is that the higher temperature of the tropics means that chemical reactions happen faster and metabolic rates are therefore higher.
线速度，在这个例子里，就是速率，是这个圆环的周长，除以走一圈，需要的秒数。
And that linear velocity, which, in this case, is really your speed, is of course the circumference of the circle divided by how many seconds it takes to go around.
然后速率，我们也可以，看作是线速度。
Now, then we have the speed, which we can also think of as a linear velocity.
自2008年年底以来，商业部门的生产率按4.2%的速度增长(按年率计算所得)而员工单位小时的薪酬则以2.1%的速率缓慢上扬(同上计算所得)。
Since the end of 2008 business-sector productivity has grown at an impressive annualised rate of 4.2% while hourly compensation has crept ahead by just 2.1%.
我的意思是加速度只沿这一个方向，它只要对速率求导即可。
I mean, acceleration is also going to be along the line, and it's going to has to do with the derivative of speed.
功率的意思是作功的速度或速率。
应用推荐