BEIJING, Feb. 24 (Xinhua) -- The gross domestic product (GDP) of China's Beijing-Tianjin-Hebei region surged from 8.96 trillion yuan (1.29 trillion U.S. dollars) in 2020 to nearly 12 trillion yuan in 2025, official data showed.
The region covers a total area of 216,000 square kilometers and has a permanent resident population of over 100 million in north China.
During the 14th Five-Year Plan period (2021-2025), the coordinated development of Beijing Municipality, Tianjin Municipality, and Hebei Province has achieved remarkable results, said Yang Xiuling, director of the Beijing Municipal Development and Reform Commission. The official added that Beijing has seen a cumulative reduction of 150 square kilometers in urban and rural construction land and the exit of over 3,000 general manufacturing enterprises.
Over the past five years, the region added 710 kilometers of railway operating mileage, and the establishment of a "1-1.5 hour transportation circle" among major cities in the region has been largely achieved. Meanwhile, the transaction volume of technology contracts flowing from Beijing to Tianjin and Hebei exceeded 320 billion yuan, with an average annual growth rate of 23 percent.
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1、Why do we capture a lot but send very little?
Firstly, the frequency points vary across regions. If your frequency point is 120, but cellularz shows 115, it will affect the transmission ratio. The normal ratio is between 40% and 60%. The specific frequency point depends on the country, and you need to find the golden frequency point for the city at that time. For some frequency points, such as 117, no matter where you are, even if cellularz shows 115, it will still transmit better at 117.
2、 Why does the device's WiFi sometimes go offline
Firstly, we consider the ratio, followed by WIFI. When your phone accesses the device's WIFI, if it is too close to the device's antenna, it will be interfered by the signal emitted by the device. Therefore, the phone should be as far away from the antenna as possible.
3、 What is the distance between the antennas?
The distance of the antenna depends on whether it is directional or omnidirectional. An omnidirectional antenna covers a 360-degree range, while a directional antenna emits in one direction but has a longer range and stronger penetration.
The current equipment has an omnidirectional range of 400-600 meters and a directional range of 800 meters. The range may increase or decrease due to power limitations. It is also affected by road conditions, such as the presence of many walls on the side of the street, which can reduce the signal penetration ability. In unobstructed high-altitude areas, the range can be extended.
