论文根据时差法超声波流量计的测量原理，设计了一款超声波流量计专用芯片。
In the thesis, an ASIC for ultrasonic flowmeter is designed based on the principle of time difference.
针对铷频标日频率漂移率的指标测试要求，文中采用时差法，设计了铷频标日频率漂移率测量装置。
For testing daily frequency drift of rubidium frequency standard, this paper used the method of time difference, designed daily frequency drift measuring equipment for rubidium frequency standard.
根据需要，提出了时差测量系统的总体设计方案、软硬件结构、主要技术指标和影响测量精度的因素。
According to the needs, the overall design of the system is put forward including the hardware and software structure, the main technical indexes and the factors that affect measurement accuracy.
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