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：

untested    音标拼音: [ənt'ɛstɪd]
未经试验的

未经试验的

untested
adj 1: not tried or tested by experience; "unseasoned artillery
volunteers"; "still untested in battle"; "an illustrator
untried in mural painting"; "a young hand at plowing"
[synonym: {unseasoned}, {untested}, {untried}, {young}]
2: not yet proved or subjected to testing; "an untested drug";
"untested theory"; "an untried procedure" [synonym: {untested},
{untried}]


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


  • The Scale of the Universe - Las Cumbres Observatory
    A comparison that can help put some perspective on the age of the universe is to compare the 13 7 billion year age of the universe to a calendar year on Earth By this comparison, the universe began on January 1st, and by May, our galaxy, the Milky Way, had formed
  • Position Statement: Age of the Earth and Universe - Planetarium
    Many independent lines of scientific evidence show that the Earth and Universe are billions of years old Current measurements yield an age of about 4 54 billion years for the Earth and about 13 8 billion years for the Universe The age of the Earth is measured by studies of radioactive elements
  • Cosmic Calendar: History Of The Universe In Just 365 Days
    The Sun is older than the Earth, but it’s difficult to comprehend the massive age difference Saying that the Earth’s age is 4 5 billion years, while the Sun’s age is 4 6 billion years, doesn’t actually seem to express how large that gap really is!
  • Cosmic Calendar | Timeline of the Universe | Universe History | Cosmic . . .
    Take a look at our cosmic calendar to realize how brief human history is compared to the age of the Universe
  • Age of Earth - Wikipedia
    The quoted age of Earth is derived, in part, from the Canyon Diablo meteorite for several important reasons and is built upon a modern understanding of cosmochemistry built up over decades of research
  • Solar System Timeline - The Planetary Society
    The below timeline shows some key events that led to our existence on Earth, from the creation of the universe to present day To learn more, read our Solar System History 101 article
  • How are the ages of the Earth and universe calculated?
    Using the known rate of change in radio-active elements (radiometric dating), some Earth rocks have been shown to be billions of years old, while the oldest solar system rocks are dated at 4 5 billion years
  • A Visual Guide to Our Solar System [Infographic] - Earth How
    The solar system is a 4 57 billion years old planetary system that includes a central star and all the natural space objects (planets) orbiting the Sun
  • How old is the Solar System? Astronomers calculate its age by studying . . .
    Astronomers estimate the age of our Solar System is 4 57 billion years, but how have they arrived at this number? We can tell how old the Solar System is by looking at other planets around other stars
  • Age of the Universe
    But this is just the mean formation age of the stuff in the Solar System, and no rhenium or osmium has been made for the last 4 56 billion years Thus to use this age to determine the age of the Universe, a model of when the elements were made is needed





中文字典-英文字典  2005-2009