常見例句雙語例句Itspulse repetition frequency was 81.脈沖重複頻率平均爲81。For improving the SNR and the reducing transmit power of the SAR simultaneously, airborne SAR often use high PRF (Pulse Repetition Frequency).機載SAR爲提高信噪比竝同時減少發(fā)射功率，往往使用較高的脈沖重複頻率（PRF）。Ultrasound-assisted gene delivery is associated with the parameters of ultrasound exposure, such as mechanical index, pulse repetition frequency, time of exposure, and so on.超聲的此種特性，與超聲的照射條件，如機械指數、脈沖重複頻率、照射時間等有關。 返回 repetition frequency