求翻译：尤其是问题中的附加磁场的边界与质子进入磁场的起点和聚焦点之间的距离、质子进入磁场的速度的方向以及附加磁场的大小和方向等有关是什么意思？

In particular, the distance between the starting and focal point of the additional problems the boundary of the magnetic field and proton into the magnetic field, the speed of protons into the magnetic field direction and the magnitude and direction of the additional magnetic field

In particular, the issue of additional magnetic field of the border to the proton magnetic field in the Start and focus point, the distance between the protons into the magnetic field direction of the magnetic field, as well as the additional size and orientation, etc.

In particular in the question additional magnetic field boundary and the proton enter the magnetic field between the beginning and the focus point distance, the proton enter the magnetic field the speed direction as well as attach the magnetic field the size and the direction and so on related

Especially in the question of additional magnetic field boundary and protons enter the distance between the starting point and focus of the magnetic field, protons into the speed of magnetic field direction and additional size and direction of the magnetic field, and other relevant

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