无束缚粒子,自由粒子

unbound particle的用法和样例：

例句

In our free particle example, it turns out that it is impossible to find a wavefunction that is an eigenstate of both position and momentum.我们以自由粒子为例，找到既有位置又有动量的波函数是不可能产生的。

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英音模仿秀

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