service phone

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service phone


文章来源:admin    时间:2018-10-24

  China plans to launch its first satellite to test the technologies of the space-based gravitational wave detection program "Tianqin" by the end of 2019.   中国计划于2019年底之前发射首颗用于检测太空重力波探测技术的卫星——天琴。   The program Tianqin, meaning "harp1 in sky," was initiated2 by Sun Yat-sen University in south China's Guangdong Province in 2015. It will consist of three satellites forming an equilateral triangle around the earth.   "It's like a harp in space. If the gravitational waves come, the 'harp's strings3" will be plucked," said Luo Jun, president of the Sun Yat-sen University and an academician of the Chinese Academy of Sciences, at a conference held recently in Guangzhou, capital of Guangdong Province.   The detection will be based on high-precision laser interferometry technology to measure the changes of the distances and locations of the three satellites, according to Luo.   Gravitational waves are "ripples4" in the fabric5 of space-time caused by some of the most violent and energetic processes in the universe. Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity.   The first-ever discovery of gravitational waves by the American Laser Interferometer Gravitational-Wave Observatory6 (LIGO), announced in February 2016, has encouraged scientists worldwide to accelerate their research.
1 harp      n.竖琴;天琴座 参考例句:
  • She swept her fingers over the strings of the harp.她用手指划过竖琴的琴弦。
  • He played an Irish melody on the harp.他用竖琴演奏了一首爱尔兰曲调。
2 initiated      n. 创始人 adj. 新加入的 vt. 开始,创始,启蒙,介绍加入 参考例句:
  • He has not yet been thoroughly initiated into the mysteries of computers. 他对计算机的奥秘尚未入门。
  • The artist initiated the girl into the art world in France. 这个艺术家介绍这个女孩加入巴黎艺术界。
3 strings      n.弦 参考例句:
  • He sat on the bed,idly plucking the strings of his guitar.他坐在床上,随意地拨着吉他的弦。
  • She swept her fingers over the strings of the harp.她用手指划过竖琴的琴弦。
4 ripples      逐渐扩散的感觉( ripple的名词复数 ) 参考例句:
  • The moon danced on the ripples. 月亮在涟漪上舞动。
  • The sea leaves ripples on the sand. 海水在沙滩上留下了波痕。
5 fabric      n.织物,织品,布;构造,结构,组织 参考例句:
  • The fabric will spot easily.这种织品很容易玷污。
  • I don't like the pattern on the fabric.我不喜欢那块布料上的图案。
6 observatory      n.天文台,气象台,瞭望台,观测台 参考例句:
  • Guy's house was close to the observatory.盖伊的房子离天文台很近。
  • Officials from Greenwich Observatory have the clock checked twice a day.格林威治天文台的职员们每天对大钟检查两次。

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