[KongchangAI]
Unverified85% confidenceFactTime unknown

QRD扩散板的最低有效扩散频率由最深井深决定(f_low≈c/2/最大井深),最高有效频率由井宽决定(约c/2/井宽);井深75mm对应约1kHz以上有效,若要覆盖500Hz需井深约170mm以上

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85%
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Long-term
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