英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:


请选择你想看的字典辞典:
单词字典翻译
Lappen查看 Lappen 在百度字典中的解释百度英翻中〔查看〕
Lappen查看 Lappen 在Google字典中的解释Google英翻中〔查看〕
Lappen查看 Lappen 在Yahoo字典中的解释Yahoo英翻中〔查看〕





安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Halleys Comet - Wikipedia
    In March 1986, during its latest visit to the inner Solar System, Halley's Comet became the first comet to be observed in detail by a spacecraft, ESA's Giotto mission, providing the first observational data on the structure of a comet nucleus and the mechanism of coma and tail formation
  • When Was Halley’s Comet Last Seen and Will It Ever Return?
    But, since we still have some time before Halley’s Comet returns, let’s dive into what makes this comet so special, the incredible journey it’s on, and what we can expect when it once again passes near Earth
  • Halley’s Comet | Astronomy, Facts History | Britannica
    Halley’s Comet, the first comet whose return was predicted and, almost three centuries later, the first to be imaged up close by interplanetary spacecraft In 1705 English astronomer Edmond Halley published the first catalog of the orbits of 24 comets
  • Halleys Comet through the ages - Astronomy Magazine
    Halley’s Comet was first mentioned by the Chinese in 240 b c e , appearing in the east, then progressing northward In other apparitions it was visible “day beyond day” for weeks
  • Halleys Comet: Facts about historys most famous comet
    Halley's Comet is arguably the most famous comet in history As a "periodic" comet, it returns to Earth's vicinity about every 75 years, making it possible for a person to see it twice in
  • In Depth | 1P Halley – NASA Solar System Exploration
    Halley is often called the most famous comet because it marked the first time astronomers understood comets could be repeat visitors to our night skies Astronomers have now linked the comet's appearances to observations dating back more than 2,000 years
  • History of Halleys Comet | The Halley Project
    Explore the rich history of Halley's Comet, from ancient observations to modern scientific understanding Learn about its most famous appearances throughout history
  • Halleys Comet meteors will streak through the sky overnight - The . . .
    The comet doesn't return for decades, but tonight is one of our two yearly reminders that it's out there!
  • Halley’s Comet - Expedition Magazine
    Every 75 years or so, Halley’s Comet, also known as Comet Halley, passes through Earth’s neighborhood along its orbit Since the dawn of man, many humans have been fortunate enough to see it twice in their lifetimes
  • Halleys comet – orbit around the sun, short period comet, next return
    The world's most renown comet Halley visits us every 75 years making it a short period or periodic comet (seen periodically less than 200 years) and its passing recorded in texts since 239 B C by ancient astronomers around the world





中文字典-英文字典  2005-2009