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研精竭慮
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研精竭慮
yán jīng jié lǜ
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宋·张淏《云谷杂记·前辈读书》:“司马温公酷好扬子云《太玄》……自云:‘少好其书,研精竭虑,历年已多,始敢为注。’”
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digital frequency communication
digital frequency comparison
digital frequency conversion fft
digital frequency counter
digital frequency discrimination
digital frequency discriminator
digital frequency display
digital frequency divide
digital frequency divider
digital frequency dividing circuit
digital frequency down-conversion
digital frequency generator
digital frequency-hop system
digital frequency measurement
digital frequency measuring
digital frequency memory
digital frequency meter
digital frequency meterdfm
digital frequency metre
digital frequency-modulating exciter
digital frequency modulation
digital frequency modulator
digital frequency monitor
digital frequency multiplication
digital frequency multiplier
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更新时间:2026/8/26 0:51:55