two-level system

常见例句

Much better to stick with a two-level system of pass and fail, or (if you will insist on such elitism) one extra level of “pass with distinction” for the top quartile.
最好还是继续两级方案，即通过和不通过，或者（若坚持精英主义）再为顶尖者增加“优秀通过”这个额外的级别。
It is shown that this approach can not only treat the two-level system within the rotating wave approximation(RWA), but also present an exact solution of the JC model without RWA.
本文的结果表明：这种方法不仅能够处理在旋转波近似下的二能级体系，也可以用来精确求解无旋转波近似时的JC模型。
The stimulated photon echo in degenerate two-level system has been studied.
研究了简并二能级系统的受激光子回波效应。