periodic structure 中文意思是什麼
periodic structure
解釋
循環結構。-
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。 -
The four principles of forming atomic nucleus sub - cluster structure and isosceles triangle periodic law of nuclein
形成原子核群子結構的四項原理及其等腰三角形核素周期律 -
Photonic bandgap properties of photonic crystals with a complicated periodic structure
復周期結構光子晶體的光子能帶特性研究 -
Diffractive characteristics of antireflective dielectric gratings with subwavelength periodic structure
二維碼字結構及其實現方法 -
Vector analysis for chromatic dispersion character - ristics of two - dimensionally periodic structure
二維周期結構色散特性的矢量理論分析 -
Analytical method of the subdomain basis functions for the transmitted characteristics of two - dimension periodic structure
二維周期結構傳輸特性的子域基函數分析法 -
Possibility of using periodic structure permanent magnetic ring as initial energy source for a magneto - cumulative generator
用周期鐵磁結構環作磁累積發生器的初始能源 -
In the first part of the paper, the explicit form of difference equation and periodic boundary condition is derived in cartesian coordinate system. secondly, the dispersive characteristic is analyzed in cylinder coordinate system for many high power microwave devices use cylinder sws. and then the method is extended to calculate the band structure of 2 - d photonic crystal, a modified yee ’ s grid is introduced to calculate the dispersive characteristic in the case of triangular lattice, so that both square lattice and triangular lattice cases can be solved in cartesian coordinate system
周期電磁結構的一個重要應用就是用作高功率微波器件中的慢波系統，考慮到目前大部分高功率微波器件的慢波系統多採用圓柱周期結構，在論文第四章中，在圓柱坐標系下，給出了差分方程和周期性邊界條件的具體形式，同時編寫程序，分析了milosws ，盤荷慢波結構的色散特性。 -
In the visual 3 - dimensional phase space, the reconstructed attractor of the reverberation exhibits round structure, which contradicts to the irregular distribution of noise and is comparable to the regular circle of periodic wave
在可視的三維相空間中，混響重構吸引子的相圖呈環形結構，其結構特點介於純隨機過程的均勻無規則散布與確定性正弦周期信號的規則圓形之間。 -
From some characteristics observed, such as the short lift time, narrow frequency band, fast frequency drift, quasi - periodic pulsation, spike event and complex magnetic structure, it is considered that the radiation mechanism of these events may be principally due to the electromagnetic waves magnified directly by the instable electronic cyclotron
從它們的觀測特徵：短壽命，窄頻帶，頻率快速漂移，及尖峰事件與磁結構復雜的大黑子活動區密切相關等，認為這些事件的輻射機制可能是電子迴旋脈澤不穩定直接放大電磁波所致。 -
Periodic vibration ; turbulence ; scaling law ; hierarchical structure
周期性擾動湍流標度律層次結構 -
Basic principle, hardware structure and function of digital ic electrical meter are expounded. the meter not only has the features of low power consumption and low costing, but has the protective functions against over current, over voltage and electricity leakage. principle and calculation methods of electricity power, periodic compensation and precision compensation are also explained in detail
詳細地敘述了數字式ic卡電度表的基本原理、硬體結構和基本功能，該電度表不僅具有低功耗、低成本的特點，過流、過壓及漏電保護功能，而且具有結構簡單、運行可靠、性能價格比高等優點.最後詳細地介紹了電能計量、精度補償、周期補償的原理及演算法的實現 -
To overcome the difference between material of dissipative installing different and the main body of structure, speciality of design and analysis and needing periodic maintenance, the topic present a new kind of dissipative device, the damper with concrete ductility column
為了克服耗能裝置與結構主體材料不同、設計分析專業性強且需定期維護的缺點，本文提出一種新型耗能裝置? ?混凝土延性柱耗能器。 -
Then, the auxiliary fields fdtd is used to the periodic structure made of dispersive material, such as the pyramid absorbers in anechoic chamber. the permittivity vs frequency property of the absorber is approached by some dispersive equation model, such as debye model and lorentz model, so the broadband response of the absorber can be gotten through one calculation
然後將輔助場fdtd應用到色散媒質周期結構中，導出了色散媒質中的迭代式，並以暗室吸波材料陣列為例進行計算，提出用某一類型的介電常數色散函數（如debye型、 lorentz型等）來逼近材料的介電常數頻率特性的方法，從而可以對吸波材料進行一次性寬頻計算。 -
Artificial periodic disturbances are introduced to the outer field of turbulent boundary layer in an closed - circuit open water channel. statistical method is employed for analyzing the velocity - fluctuation - time - series. the effect of the disturbance to turbulent structure in boundary layer is studied
在開口式循環水槽底部湍流邊界層外區中引入周期性擾動，對湍流場的速度脈動時間序列信號進行了統計分析，研究了湍流邊界層中周期性人工擾動對湍流結構的影響，結果表明高頻擾動的湍流中she - leveque簡稱sl湍流層次相似律成立。 -
One mechanical company has a batch of experienced professional technology personnel east, the mechanical facility that can have for you or the mechanical equipment that you prepare to develop undertake design and offerring fittings, in order to satisfy your mechanical equipment all sorts of use operating mode actually ; east no matter the fittings of one is in the test that service life, characteristic, specific power consumption, material can undergo all sorts of operating mode on qualitative, structure, make your mechanical equipment can longer periodic stability runs, remove the trouble back at home with your mechanical equipment fragile fittings ; move one company to think user place thinks, urgent user place is urgent ; the equipment spot that is you is offerred seek advice, maintenance, maintain wait for concerned after service
東一機械公司擁有一批經驗豐富的專業技術人員，可以為您現有的機械設備或您準備開發的機械備進行設計和提供配件，以滿足您的機械設備各種實際使用工況；東一的配件無論在使用壽命、特性、能耗、材質、結構上都能經受各種工況的考驗，使您的機械設備能較長周期穩定運轉，解除您的機械設備配件易損的后顧之憂；動一公司想用戶所想、急用戶所急；並為您的設備現場提供咨詢、維修、保養等有關的售後服務。 -
This book, which was a simple outline of the periodic table and atomic structure, impressed me greatly
這本書簡明地概述了元素周期表和原子的結構，給我留下了極為深刻的印象。 -
Using the plane wave expansion method, from the computation result for the band gaps structure of infinitd periodic one dimension phononic crystal, it is found the width of the first gap relates with the material portion ratio
利用平面波展開法，計算一維無限周期結構聲子晶體的帶隙結構，發現每一帶隙的寬度與材料的組份比有關。 -
Periodic structure ( ps ) has been used in many applications such as slow wave structure ( sws ) and frequency selective surface
周期電磁結構有著廣泛的應用，常被用作頻率選擇表面或者高功率微波器件中的慢波結構等。 -
A frequency selective surface ( fss ) is a metallic periodic structure with frequency selective properties. depending upon design, it may be low - pass, high - pass, band - pass, band - stop filter
頻率選擇表面（ fss ）是具有選擇頻率功能的一塊金屬周期結構，它可以被設計成低通、高通、帶通、帶阻濾波器。
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