会英文的进 可以求时间的吗?A particle at was detected at point (2,1,3).Then after it bounces off the surface was observed at point (2,2,2).For how long the particle was missing?(How long did it take for particle to travel from one point to

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会英文的进 可以求时间的吗?A particle at was detected at point (2,1,3).Then after it bounces off the surface was observed at point (2,2,2).For how long the particle was missing?(How long did it take for particle to travel from one point to

会英文的进 可以求时间的吗?A particle at was detected at point (2,1,3).Then after it bounces off the surface was observed at point (2,2,2).For how long the particle was missing?(How long did it take for particle to travel from one point to
会英文的进 可以求时间的吗?
A particle at was detected at point (2,1,3).Then after it bounces off the surface was observed at point (2,2,2).For how long the particle was missing?(How long did it take for particle to travel from one point to another?)
x+y+z=3　碰撞的平面是

会英文的进 可以求时间的吗?A particle at was detected at point (2,1,3).Then after it bounces off the surface was observed at point (2,2,2).For how long the particle was missing?(How long did it take for particle to travel from one point to
how long也可以表示长度
粒子在平面反射后从(2,1,3)到了(2,2,2)
问它的路程是多少
分别经xy,yz,zx反射
其实只要做粒子的对称点
(-2,1,3)
(2,-1,3)
(2,1,-3)
再算对称点与(2,2,2)的距离即可
当然还有反射两次的
对称点为
(-2,-1,3);(-2,1,-3);(2,-1,-3)
反射三次的
对称点为(-2,-1,-3)
没有反射更多次的了,因为反射与对称点是一一对应的
PS:以上仅是我的个人理解,供你参考

条件不够啊

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