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        "quote": "这个表达式直观地说明了经典极限 $\\hbar\\to0$ 下经典行为如何出现。振荡积分的[<u class=\"concept-term\" data-concept-reference=\"concepts/analysis/stationary-phase-approximation\" data-concept-identity=\"urn:uuid:68eedf23-0c59-42f4-84e4-dee129e2d813\" data-concept-route=\"/concept-identities#concept-68eedf23-0c59-42f4-84e4-dee129e2d813\" id=\"first-e912908913a6f415c943-zh\">稳相近似(stationary phase approximation)</u>](../../../../../concepts/analysis/stationary-phase-approximation)指出：若函数 $f$ 只有一个临界点 $x=x_c$，即 $f^\\prime(x_c)=0$，且参数 $\\epsilon$ 很小，则有",
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        "quote": "This expression gives a simple picture of how classical behavior emerges as $\\hbar\\to0$. The [<u class=\"concept-term\" data-concept-reference=\"concepts/analysis/stationary-phase-approximation\" data-concept-identity=\"urn:uuid:68eedf23-0c59-42f4-84e4-dee129e2d813\" data-concept-route=\"/concept-identities#concept-68eedf23-0c59-42f4-84e4-dee129e2d813\" id=\"first-e912908913a6f415c943-en\">stationary phase approximation</u>](../../../../../concepts/analysis/stationary-phase-approximation) for oscillatory integrals says that, for $f$ with a single critical point $x=x_c$, where $f^\\prime(x_c)=0$, and small $\\epsilon$, one has",
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