伽利略导航系统恢复服务

时间：2019-07-19 09:17:43

（单词翻译:单击）

Europe's satellite navigation system Galileo returned to service on Thursday after days of outage.

欧盟的伽利略卫星导航系统在宕机几天之后于周四重新恢复服务。

The European Global Navigation Satellite Systems Agency said in a statement that Galileo Initial Services have now been restored; commercial users can already see signs of recovery of the Galileo navigation and timing¹ services, although some fluctuations² may be experienced until further notice.

The Prague-based agency explained that the outage originated by an equipment malfunction³ in the Galileo ground infrastructure⁴, affecting the calculation of time and orbit predictions -- which are used to compute⁵ the navigation message. The malfunction affected⁶ different elements on the ground facilities.

"We will set an Independent Inquiry⁷ Board to identify the root causes of the major incident", which will "draw lessons for the management of an operational system with several millions of users worldwide," said the agency.

It stressed that Galileo was in an "initial services" period since December 2016, and "during this initial 'pilot' phase, Galileo signals are used in combination with other satellite navigation systems, which allows for the detection of technical issues before the system becomes fully⁸ operational. In the full operational phase, Galileo should function independently of other satellite navigation systems."

Nevertheless, the outage, started since last week, has been widely seen as a major embarrassment⁹ for the European Union, which during the outage struggled to explain the cause.

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收听单词发音

1 timing
n.时间安排，时间选择
参考例句：
The timing of the meeting is not convenient.会议的时间安排不合适。 The timing of our statement is very opportune.我们发表声明选择的时机很恰当。

2 fluctuations
波动，涨落，起伏( fluctuation的名词复数 )
参考例句：
He showed the price fluctuations in a statistical table. 他用统计表显示价格的波动。 There were so many unpredictable fluctuations on the Stock Exchange. 股票市场瞬息万变。

3 malfunction
vi.发生功能故障，发生故障，显示机能失常
参考例句：
There must have been a computer malfunction.一定是出了电脑故障。 Results have been delayed owing to a malfunction in the computer.由于电脑发生故障，计算结果推迟了。

4 infrastructure
n.下部构造，下部组织，基础结构，基础设施
参考例句：
We should step up the development of infrastructure for research.加强科学基础设施建设。 We should strengthen cultural infrastructure and boost various types of popular culture.加强文化基础设施建设，发展各类群众文化。

5 compute
v./n.计算，估计
参考例句：
I compute my losses at 500 dollars.我估计我的损失有五百元。 The losses caused by the floods were beyond compute.洪水造成的损失难以估量。

6 affected
adj.不自然的，假装的
参考例句：
She showed an affected interest in our subject.她假装对我们的课题感到兴趣。 His manners are affected.他的态度不自然。

7 inquiry
n.打听，询问，调查，查问
参考例句：
Many parents have been pressing for an inquiry into the problem.许多家长迫切要求调查这个问题。 The field of inquiry has narrowed down to five persons.调查的范围已经缩小到只剩5个人了。

8 fully
adv.完全地，全部地，彻底地；充分地
参考例句：
The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气，然后全部呼出。 They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。

9 embarrassment
n.尴尬；使人为难的人(事物)；障碍；窘迫
参考例句：
She could have died away with embarrassment.她窘迫得要死。 Coughing at a concert can be a real embarrassment.在音乐会上咳嗽真会使人难堪。