And I take a case whereby - I have a completely elastic collision — 0 that means Q is zero — the kind that we have just discussed.
我采取这个例子，我有个完全弹性碰撞-，意味着Q为-，这是我们刚讨论过的。
2
No significant differences were found in the heart rate, QRS intervals, Q T intervals, sinus bradycardia, sinus tachycardia and left axis deviation between exposed and control groups ( P >0 05).