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The result shows that there exists a critical value, i. e. threshold, in the four-photon parametric processes.
结果表明,在四光子参量过程中也同样存在着一个临界值——阈值。
youdao
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The result shows that there exists a critical value, i. e. threshold, in the four-photon parametric processes.
结果表明,在四光子参量过程中也同样存在着一个临界值——阈值。
youdao