Universities that make the switch to a system based on big data face several obstacles.
将评估体系转变为使用大数据的高校也面临着不少困难。
Finally, it analyzes the obstacles and cooperative mechanism of regional economic cooperation based on system, infrastructure and industry division.
最后，从体制、基础设施和产业分工方面，分析了区域经济合作的障碍和合作机制。
Fourthly, the author designs a system based on MCU AT89C52, which can detect obstacles with infrared sensors and measure the environmental temperature with temperature sensor.
第四，自主设计和实现了基于AT89C52单片机的多红外传感器障碍物信息检测与环境温度检测系统。
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