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  • Updated: 2021-12-29
  • Views: 1590
domestic [China Post Express News] the State Post Office recently issued the notice on carrying out the pilot work of "express delivery to the village", and decided to organize the pilot work of "express delivery to the village"
  • Updated: 2021-12-29
  • Views: 1725
one Global 5g commercial development: strong momentum On the evening of July 3 Beijing time, 3GPP announced the freeze of rel-16 standard, marking the completion of the first evolved version of 5g standard. After the announcement of the freeze, t
  • Updated: 2021-12-29
  • Views: 3764
1、 What is millimeter wave radar Millimeter wave radar refers to the millimeter wave with wavelength of 1-10nm and frequency of 30ghz-300ghz, c……
  • Updated: 2021-12-28
  • Views: 1951
The new industrial revolution is coming. In recent years, many countries have put forward their own industrial transformation and upgrading development strategies and names, such as industry 4.0 in Germany and intelligent manufacturing in China. However,
  • Updated: 2021-12-28
  • Views: 3230
Summary: With the continuous development of mobile communication network, operators have different frequency band resources of high, medium and low. Radio band resources are valuable strategic resources. How to make rational and efficient use of spec
  • Updated: 2021-12-28
  • Views: 1912
lately After the flood and rainstorm in South China, a sudden landslide collapsed in Shimen County, Hunan Province. Fortunately, there were no casualties because Before the landslide Shimen County fourteen household thirty-three p
  • Updated: 2021-12-28
  • Views: 1964
GlobalfourAnalysis of large satellite navigation system Abstract: in order to further study the satellite navigation system, the four existing global satellite navigation systems are compared and analyzed: from the aspects of constellation, signal
  • Updated: 2021-12-28
  • Views: 1881
preface According to CCTV news, China recently successfully launched the 54th navigation satellite of the Beidou system with a long march 3B carrier rocket at the Xichang Satellite Launch Center. The satellite has successfully entered the predet
  • Updated: 2021-12-28
  • Views: 2029
Although it is 2018, when talking about the "Beidou system", many people's impression may still stay in 2008 - during the Wenchuan earthquake relief, Beidou generation equipment sent the first message from the earthquake area. Gener
  • Updated: 2021-12-28
  • Views: 1812
Typhoon "haigebi" is approaching step by step. Strong winds have blown in Liuzhou Bay, Sansha Town, Xiapu County, Fujian Province. Nearly 100 fishing boats have been parked neatly in the Bay, and all 541 fishing boats have returned to Hong Kong
  • Updated: 2021-12-28
  • Views: 1976
On July 31, the beidou-3 global satellite navigation system was officially completed and put into operation. We also have a big move - Chihiro positionTo promote Beidou high precisionThe large-scale application of positioning technology in the field of in
  • Updated: 2021-12-28
  • Views: 1780
Introduction: Recently, China's Beidou global satellite navigation system has attracted much attention. What are the advantages of China's Beidou global satellite navigation system compared with the GPS global positioning system of the Unit
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