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：

ionosphere    音标拼音: [ɑɪj'ɑnəsfir] [ɑɪ'ɑnəsfir]
n. 电离层

电离层

ionosphere
n 1: the outer region of the Earth's atmosphere; contains a high
concentration of free electrons

ionosphere \ionosphere\ n.
the outer region of the earth's atmosphere, beyond which is
the {exosphere}; it contains a high concentration of free
electrons and ions, and extends from about 50 miles to about
250 miles above the earth's surface, but the height shows
daily and seasonal variation, and the composition of the
particles in the ionosphere is also affected by events such
as solar flares.
[WordNet 1.5 PJC]


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


  • Ionosphere - Wikipedia
    The ionosphere ( aɪˈɒnəˌsfɪər ) [1][2] is the ionized part of the upper atmosphere of Earth, from about 48 km (30 mi) to 965 km (600 mi) above sea level, [3] a region that includes the thermosphere and parts of the mesosphere and exosphere The ionosphere is ionized by solar radiation
  • Ionosphere | NOAA NWS Space Weather Prediction Center
    Due to spectral variability of the solar radiation and the density of various constituents in the atmosphere, there are layers are created within the ionosphere, called the D, E, and F-layers
  • 10 Things to Know About the Ionosphere - Science@NASA
    The ionosphere stretches roughly 50 to 400 miles above Earth's surface, right at the edge of space Along with the neutral upper atmosphere, the ionosphere forms the boundary between Earth's lower atmosphere — where we live and breathe — and the vacuum of space
  • The Ionosphere - Center for Science Education
    Regions with higher concentrations of ions and free electrons occur at several different altitudes and are known, as a group, as the ionosphere There are three main regions of the ionosphere, called the D layer, the E layer, and the F layer
  • What is the ionosphere? (And who is Steve?) - Live Science
    A dense layer of molecules and electrically charged particles, called the ionosphere, hangs in the Earth's upper atmosphere starting at about 35 miles (60 kilometers) above the planet's surface
  • International Reference Ionosphere - Wikiwand
    International Reference Ionosphere (IRI) is a common permanent scientific project of the Committee on Space Research (COSPAR) and the International Union of Radio Science (URSI) started 1968 69 It is the international standard empirical model for the terrestrial ionosphere since 1999 For a specified geographic location, time, and date, IRI provides average monthly values for electron density
  • Tracking Solar Flares
    The ionosphere is defined as the layer of the Earth's atmosphere that is ionized by solar and cosmic radiation It lies 75-1000 km (46-621 miles) above the Earth
  • Ionosphere and magnetosphere | Atmospheric Science, Solar Wind, Radio . . .
    The name “ionosphere” was introduced first in the 1920s and was formally defined in 1950 by a committee of the Institute of Radio Engineers as “the part of the earth’s upper atmosphere where ions and electrons are present in quantities sufficient to affect the propagation of radio waves ”
  • How Xs and Cs spotted in the ionosphere could disrupt life on Earth - CNN
    Each day, radio signals from key communications and navigation satellites travel freely through a layer of Earth’s atmosphere known as the ionosphere
  • Training about the basic properties of the Ionosphere as seen on the . . .
    The ionosphere is defined as the ionised part of the upper atmosphere (60-2000 km approximately) As it contains a significant number of free electrons it has an important influence on the propagation of radio-electric signals (Figure 1)





中文字典-英文字典  2005-2009