BEIJING, Sept. 29 -- A 2,000-km quantum communication line opened on Friday between Beijing and Shanghai.
The line is the world's first trunk line of secure quantum telecommunications. The Jing-Hu (Beijing-Shanghai) Trunk Line connects Beijing, Jinan, Hefei, and Shanghai.
The line is connected with the world's first quantum satellite, which was launched by China in August last year, through a station in Beijing. The satellite is nicknamed "Micius," after a fifth century B.C. Chinese philosopher and scientist who has been credited as the first one in human history conducting optical experiments.
Bai Chunli, president of the Chinese Academy of Sciences (CAS), talked with staff in Hefei, Jinan, Shanghai and Xinjiang Uygur Autonomous Region, through the line. He also had a video call with Austrian quantum physicist Anton Zeilinger, through the satellite.
Quantum communications have ultra-high security. It is impossible to wiretap, intercept or crack the information transmitted through them.
Passion and enthusiasm 两个词的区别
Under someone's thumb 受人控制
Spectacle, view, sight, vision, scene, scenery 几个词的区别
Improving your vocabulary 增加词汇量
Is breast cancer linked to night shifts? 乳腺癌与上夜班有关系吗?
A nest egg 储备金
Labour, labourer, workforce, worker 与“工作”相关的四个单词
Practical and pragmatic “实用的”两个词的区别
Burn a hole in your pocket 一有钱就想花
Barrier, hurdle, impediment, hindrance 四个表示“障碍”单词的区别
Have your feet on the ground 脚踏实地
Butterfly numbers drop a mystery, say experts 英国蝴蝶数量下降现象令专家费解
Different types of hats 各种帽子的英文说法
Objective and purpose 目标和目的
Armed to the teeth 全副武装
Limit 和 restrict 的区别
Shopping for ‘shoes’ 不同种类的“鞋”
To have deep pockets 资金雄厚
To be on the same wavelength 意气相投
Dictionary and other words 与“词典”相关的近义词
Retailer, wholesaler, distributor, outlet 几个词的区别和用法
At sixes and sevens 乱七八糟
Turn a blind eye 视而不见
Different types of ‘tissue’ 不同种类的“纸巾”
Dirt cheap 非常便宜
Lose one's shirt 输得一干二净
Double, treble, triple, quadruple 英语中表示倍数的单词
Pay through the nose for something 出高价,花大价钱
Strapped for cash 手头紧
Tasmanian devil milk fights superbugs 袋獾乳汁可对抗“超级细菌”
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