Evaluation of the use of this paper collected 837 counties (cities) in the effective data completed 2001-2002 counties (cities) of scientific and technological progress trend analysis.
论文利用本次考核中所收集的837个县(市)的有效数据完成了2001 - 2002年县(市)科技进步态势分析。
On the aspect of hardware, they include: narrow pulse and high frequency ultrasonic sensor's design, high frequency signal generator and receiver's design, high speed data completed sampling's design.
因此本文还详细阐述以下内容:硬件方面采用了高频窄脉冲信号发生及接收放大电路、高速数据采集电路;
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