So let's be clear. The jury is back. The verdict is in. There is no electronic-based cause for unintended high-speed acceleration in Toyotas. Period.

我们必须明确，陪审团已经回来了，判决已经出炉。丰田汽车加速器突然加速并不是电子元件的原因。

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The pump system provides the additional fuel flow necessary to overcome this leanness and maintains smooth engine operation during rapid low-speed acceleration.

加速装置为这种情况提供额外的燃油，从而客服这种问题，使发动机在加速过程中平顺工作。

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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.

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。

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And, you know acceleration means either change of speed or change of direction.

你知道加速度意味着,不是改变速度就是改变方向。

麻省理工公开课 - 固态化学导论课程节选

Whenever you see a particle moving in a circle, even if it's at a constant speed, it has an acceleration, v square over r directed towards the center.

只要看到质点做圆周运动,即使是匀速圆周运动,也存在一个加速度,大小为 v^2 / r,方向指向圆心

耶鲁公开课 - 基础物理课程节选

Remember, you've got to keep track of the sign of acceleration, so if you're picking up speed towards the ground, a is negative, so it will be g plus a, but a is a negative number.

记住,一定要注意加速度的符号,所以当你加速下降的时候,a 是负的,还是 g 加上 a,但是 a 是负数

耶鲁公开课 - 基础物理课程节选

Regarding performance, until a few years ago priorities were, in this order: top speed, acceleration and handling.

FORBES: Connect

Beginning in the 2013 season, all 19 MLS clubs will use the data-tracking technology from adidas, providing coaches, trainers and players with real-time performance metrics including heart rate, speed, acceleration, distance, field position and, for the first time, power.

ENGADGET: Adidas miCoach Elite System set to equip all MLS teams in 2013, creates world's first 'smart league'

Hu and his team wanted to create the ultimate fish: Aiming to emulate the speed of tuna, acceleration of a pike, and the navigating skills of an eel.

CNN: Robotic fish make aquarium debut