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atomic number中文是什么意思

  • 【化学】原子序数。

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  • 例句与用法
  • As they are positively charged , their motion will be affected by an electromagnetic field . in general , heavy atoms ( having atomic numbers greater than 82 ) would tend to emit
    在自然界内大部份的重元素(原子序数为82或以上)都会在衰变时释放它,例如铀和镭。
  • The cosmic rays are mainly made up of high energy photons , plus some helium nuclei and heavy charged particles and ions , with atomic number equal to or greater than 3
    宇宙射线的主要成份是高能量的质子,其次是氦原子核及少量原子序数3或以上的重粒子和离子。
  • " nitrogen : gaseous chemical element , chemical symbol n , atomic number 7 . a colourless , odourless , tasteless gas , it makes up 78 % of earth ' s atmosphere and is a constituent of all living matter .
    氮:气态化学元素,化学符号n ,原子序数7 。无色、无臭、无味的气体,占地球大气的78 % ,也是所有生物体的组成部分。
  • Where a is the mass number equal to the numbers of protons plus the number of neutrons in the nucleus , z is the atomic number equal to the number of protons in the nucleus , x is the chemical symbol of the atom
    表示, a是质量数,是原子核内的质子及中子数目总和。 z是原子序数,等于质子的数目。 x是原子的化学符号。
  • Where a is the mass number equal to the numbers of protons plus the number of neutrons in the nucleus , z is the atomic number equal to the number of protons in the nucleus , x is the chemical symbol of the atom
    表示, a是质量数,是原子核内的质子及中子数目总和。 z是原子序数,等于质子的数目。 x是原子的化学符号。
  • The optical limiting properties of the materials are investigated by using nanosecond laser pulses . we find that skeleton atoms and terminal ligands with larger atomic number can improve the optical limiting power of clusters with the same structure via heavy - atom effect
    研究了团簇材料的光学限幅特性,发现对于相同的结构的团簇,骨架上的原子序数较大的金属原子或终端配位体能通过重原子效应有效提高光限幅能力。
  • Cdse , a ii - vi compound with direct transition , wide - band - gap and high atomic number ( 48 , 34 ) , is regarded as a new effective materials for room temperature nuclear radiation detectors and photoconductive devices , and can be used in many fields
    Prince提出的优良室温核辐射探测器材料必须具备的要求,因而被认为是制备室温核辐射探测器的最有前途的新材料之一,可广泛应用于探矿、无损检测、核医学、环境监测、军事和空间宇航技术等领域。
  • It possess many of the physical properties such as high atomic number ( z ) , large enough band gap , high resistivity , relatively low leakage currents , and high intrinsic mobility - lifetime ( ut ) product , which are required for room - temperature nuclear radiation detectors . so it is widely used in nuclear medical imaging system , space engineering , and astrophysics , environmental monitoring , and so on . in addition , it is the best substrate for lattice matched epitaxial growth of hg1 - xcdxte ( mct ) thin films and solar cells
    用单晶czt制成的探测器可在室温下工作,工作温度范围宽( - 20 40 ) ,能量探测范围宽( 10kev 6mev ) ,对x射线、射线能量分辨率高,在x射线、射线成像、天体物理研究、工业探测、安全检测、核辐射探测、核废料监控、 x射线荧光分析( xrf ) 、 x射线断层扫描和核医学等方面有重要用途。
  • 1 lanthanide hydrides ( m = la , nd , sm , dy and yb ) can be prepared easily by the direct hydrogenation of lanthanide metals catalyzed by ticl4 in tetrahydrofunan ( thf ) under normal pressure . the rate of hydrogenation decreased with increasing atomic number of lanthanides . transmission electron micrographs showed that the resulted lanthanide hydrides were in the form of nanoparticles with an average primary particle size around 20 - 40 nm
    本论文首次提出一种在温和条件下催化合成纳米尺寸的镧系金属氢化物的方法,介绍在常温常压下,镧、钕、钐、镝、镱五种镧系金属在四氢呋喃( thf )溶剂中,催化剂作用下与氢气直接化合形成相应的纳米尺寸的镧系金属氢化物。
  • The test results show that : 1 . under giving conditions , two explosives with the same atomic number ratio have similar combustion performances , 2 . the pressed charge and the powder charge shows observably different combustion characteristics , 3 . within 211 . 7 m - 635 . 0 m , decreasing the grain size may enhance combustion velocity
    通过对测试结果的分析表明,在特定条件下具有相同原子组成比例的炸药,其燃烧性能相近;同种炸药的药柱和药粉燃烧性能差异较大;在211 . 7 635 . 0 m范围内, hmx 、 rdx颗粒越细,燃烧越快。
  • 更多例句:  1  2  3  4
  • 英文解释
  • the order of an element in Mendeleyev''s table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element

  • 百科解释
In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. It is conventionally represented by the symbol Z.
详细百科解释
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