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
gravities查看　gravities　在百度字典中的解释百度英翻中〔查看〕
gravities查看　gravities　在Google字典中的解释Google英翻中〔查看〕
gravities查看　gravities　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:


  • Gravity | Definition, Physics, Facts | Britannica
    Gravity, in mechanics, is the universal force of attraction acting between all bodies of matter It is by far the weakest force known in nature and thus plays no role in determining the internal properties of everyday matter Yet, it also controls the trajectories of bodies in the universe and the structure of the whole cosmos
  • Gravity - Celestial Interaction, Force, Physics | Britannica
    Gravity - Celestial Interaction, Force, Physics: When two celestial bodies of comparable mass interact gravitationally, both orbit about a fixed point (the center of mass of the two bodies) This point lies between the bodies on the line joining them at a position such that the products of the distance to each body with the mass of each body are equal Thus, Earth and the Moon move in
  • Gravity’s Rainbow | Summary, Characters, Postmodernism, Satire . . .
    Gravity’s Rainbow is a novel by American writer Thomas Pynchon that was published in 1973 It won the National Book Award for fiction in 1974 and is considered a masterpiece of American literature
  • Gravity Definition Meaning | Britannica Dictionary
    GRAVITY meaning: 1 : a very serious quality or condition the condition of being grave or serious; 2 : the natural force that tends to cause physical things to move towards each other the force that causes things to fall towards the Earth
  • American Petroleum Institute gravity scale - Encyclopedia Britannica
    Liquids lighter than water, such as oil, have API gravities numerically greater than 10 On the basis of their API gravity, crude oils can be classified…
  • Specific gravity | Formula, Units, Equation | Britannica
    Specific gravity is the basis of methods used throughout history to concentrate ores Panning, jigging, shaking, spiral separation, and heavy-medium separation are among the methods that depend on differences in specific gravity to obtain concentrated ore Specific gravity is highest in rocks rich in iron, magnesium oxide, and the heavy metals and lowest in those rich in alkalies, silica, and
  • Gravitational constant | Definition, Value, Units, Facts | Britannica
    Gravitational constant, physical constant denoted by G and used in calculating the gravitational attraction between two objects, which is equal to G times the product of the masses of the two objects divided by the square of the distance between their centers The value of G is 6 6743 x 10^-11 m^3 kg^-1 s^-2
  • Mineral - Nesosilicates, Structure, Chemistry | Britannica
    A distinguishing factor between the two groups, the presence of the hydroxyl radical in the amphiboles, generally gives the double-chain members lower specific gravities and refractive indices than their single-chain analogues
  • List of presidents of the United States | U. S. Presidents, Presidential . . .
    As the head of the government of the United States, the president is arguably the most powerful government official in the world The president is elected to a four-year term via an electoral college system Since the Twenty-second Amendment was adopted in 1951, the American presidency has been
  • Petroleum industry | Britannica
    In crude oil: Chemical and physical properties The petroleum industry, however, uses the American Petroleum Institute (API) gravity scale, in which pure water has been arbitrarily assigned an API gravity of 10° Liquids lighter than water, such as oil, have API gravities numerically greater than 10 On the basis of their API gravity,… Read More





中文字典-英文字典  2005-2009