periodic group 中文意思是什麼
periodic group
解釋
周期類-
Consisting of the protracting graph of hydrogen - like atom ' s angle distributing, computer simulation of the symmetry of molecular orbital and chemical reaction mechanism, showing the molecular point group and symmetry element, computer simulation of molecular vibration, bravias ' s crystal lattice and their transforming, extracting of plane periodic lattice, extracting of solid periodic lattice, close packing of isometrical pellet and the structure of simple mental substance, close packing of unequal pellet and crystal structure of representative ionic crystal, computer simulation of phase analysis by x - ray diffraction
內容包括類氫原子角度分布圖的繪制，分子軌道對稱性和反應機理的微機模擬，分子點群和對稱元素顯示，分子振動運動的微機模擬，布拉維晶格和晶格轉化，平面點陣抽取，立體點陣抽取，等徑網球的密堆積和金屬單質結構，不等徑圓球密堆積和典型離子晶體結構， x射線多晶衍射的微機模擬十個子模塊。 -
There is only a moderate increase in atomic size as we go down a given group in the periodic table.
當周期表中一定的族由上往下時，原子的大小僅有緩慢的增加。 -
A group of methods for achieving periodic reductions in the book value of fixed assets that make larger reductions in the early periods and progressively smaller reductions in later periods
使固定資產賬面價值周期性減少的一系列方法，這種折舊方法所計算的折舊費在期初時較大，然後逐漸變少。 -
Orders of periodic elements of general linear group over any field
任意域上一般線性群周期元素的階 -
This at least accounts for the fact that a particular group of meteoroids shares with its parent comet more or less the same orbit, which can remain relatively unchanged over eons. an immediate consequence is that our earth makes periodic rendezvous with this meteoroid swarm, thereby culminating in a regular display of these celestial fireworks. to name a few, we have the lyrids in april and the geminids in december
流星雨的成因是地球遇上了一群密集的流星體，一般相信，流星群是由周期性彗星分解出來的物質或由瓦解了的彗核所形成，所以流星群和其母體彗星有大致相同的軌道，由於流星群的軌道頗為固定，所以地球會周期性地穿越這些流星群，形成固定出現的流星雨，例如四月天琴座流星雨十二月雙子座流星雨等。 -
We also hold periodic meetings regarding copyright protection developments as well as media hardware working group sessions and social gatherings to discuss various issues
並且還定期舉行關于版權保護的開發進度的會議及包括媒體和硬體公司的會議及對各種課題進行分科的會議。 -
The board monitors the group s progress on corporate governance practices. periodic meetings are held, and circulars or guidance notes are issued to directors and senior management where appropriate, to ensure awareness of best corporate governance practices
董事局監察及檢討集團之企業管治常規，于合適情況下向董事及高級管理人員發出通告及指引，以確保其對企業管治常規之警覺性。 -
What about the entire periodic table ? that exercise is trickier because you have to arrange the data into the familiar format based on group and period, which requires some fancy coding. you can t just place the components in fixed positions
這個練習需要更多技巧，因為要按照分組和周期將數據排列成常見的格式，所以需要某些具有想像力的代碼，不能簡單地將各部分放在固定的位置。
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