双光子干涉本质是整体状态不可区分。
1·Because of the indistinguishability of the electrons, there is complete electronic democracy.
因为电子的不可分辨性，电子有完全的自由。
2·Because of the indistinguishability of the electrons, there is complete electronic democracy.
不可分辨性，电子有完全的自由。