As in the particle in a box, it is the boundary conditions that force us to quantize the energy.
象在箱中粒子那样，边界条件迫使我们使能量量子化。
When a charged particle zips through the chamber, the vapour condenses into a trail of droplets showing the particle's path and, if the box is placed in a magnetic field, its electrical charge.
当一个带电粒子快速穿越云室时，水汽会凝结形成一串小液滴，这样便标识出了该粒子的路径；若将容器置于一个磁场中，还能知道粒子所带电荷的性质。
Thus, confinement effects modify electron energy levels, similar to a particle in a box, whereby Coulomb blockade effect arises as a consequence of the discrete nature of electric charges.
因此，限制效应改变了电子能水平，就好像一个装在盒子中的颗粒，这就是为什么电荷的离散特性会导致库仑阻塞效应的原因。
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