On my 4GB memory card with a sample of 160 pictures, I recovered all but six.
在我的4GB的160个样品的照片存储卡，我恢复，除六个。
Aiming at data acquisition of radar echo signal with low SNR, IF band-pass sampling concept is proposed. High-speed acquisition card PCI_9820 is used to sample in real-time and store data.
针对低信噪比的雷达回波信号数据采集，文中给出了中频带通采样方案，并选用PC I_9820高速采集卡实时采集和存储数据。
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