The expectation value of an observable bridges a quantum quantity with a certain classical quantity, but one must pay attention to the way of the bridging.
一个可观察的期望值桥梁一个具有一定的古典数量的量子数量，但一定要注意衔接的方式。
The expectation value of an observable bridges a quantum quantity with a certain classical quantity, but one must pay attention to the way of the bridging.
一个可观察的期望值桥梁一个具有一定的古典数量的量子数量，但一定要注意衔接的方式。
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