... post deflection acceleration 后加速 ; 转后加速 post-acceleration tube 后加速管 post-acceleration focusing 后加速聚焦 ...
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后加速聚焦 post-acceleration focusing
重合闸后加速保护 Relay acceleration after auto-reclosing ; Delayed Accelerated Protection Trip
偏转后加速器 PDA ; post-deflection accelerator
后加速示波管 post-acceleration oscilloscope tube
最后加速阶段 final stage of acceleration
后加速阳极 [电子] postaccelerating anode
后加速保护 accelerated protection after fault
术后加速康复 Enhanced Recovery After Surgery
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盖尔擅长20米后加速跑。
你知道吧,盖尔非常擅长20米后加速跑。
You know, Gail is very good at acceleration after 20 meters.
利用改变点模型从纵向数据中找出加速点、前加速期下降速率和后加速期下降速率。
We estimated the time at which the rate of decline begins to accelerate (the change point), and the pre - and post-acceleration rates of decline, from the longitudinal data using a change point model.
So you cannot use the formula once it hits the ground because once it hits the ground, the fundamental premise that a was a constant of -9.8 or -10 is wrong.
当物体落地以后,该公式就不适用了,因为当物体落地后,公式的基本前提——,加速度为常数-9.8或-10——就不成立了
Conversely, if you get an answer and it doesn't seem to make sense, then you've got to go back and ask, am I violating some of the assumptions, and here you will find the assumption that the particle had that acceleration a is true as long it's freely falling under gravity but not when you hit the ground.
反过来说,如果你得到一个结果,发现似乎是错的,那么你就应该回过头来问问自己,我是不是违反某些前提了,这个模型中,你就发现,只要质点在重力作用下自由下落,质点具有加速度a的前提是正确的,但是落地后就不成立了
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