繞射力 的英文怎麼說
中文拼音 [ràoshèlì]
繞射力
英文
diffraction force-
It also explains the phenomenal efforts to launch the first soviet space dog and, then, the first soviet cosmonauts to orbit the earth
它也解釋了發射第一條太空狗的不凡努力,並讓第一批蘇聯太空人繞地球運行。The major work is as follows : solution of two dimensional radiation or diffraction fluid field. this thesis extends multipole expansion method to adapt to disturbed fluid fields of 2d floating bodies with asymmetric forms, which is applied with symmetric forms originally. and given the solution of potential velocity and hydrodynamic pressure of radiation and diffraction fluid fields, which is incited by a 2d arbitrary form, actual application field of the multipole expansion method has been enlarged
關於二維擾動流場的求解:將通常僅適宜求解具有對稱形狀二維物體擾動流場的多極展開法(保角變換方法)擴展至非對稱形狀二維物體,給出了任意形狀二維物體的輻射和繞射流場的速度勢及水動壓力的頻域解,進一步擴大了多極展開法的實際應用范圍。This method applies the extended strip theory to establish the nonlinear ship motion equations in regular head seas, obtains stable time course by resolving in time domain, and then pressure vectors will be available. the pressure includes static pressure, incident waves pressure, diffraction pressure, radiation pressure, and wave impact pressure, and changed with instantaneous draft of each intersection
該方法應用擴展的切片理論建立迎浪規則波中船舶非線性運動方程,通過時域步進求解獲得船舶剛體運動的穩定時歷,進而給出與船體各橫剖面瞬時吃水相對應的靜水壓力變化、入射波壓力、繞射壓力、輻射壓力和波浪沖擊壓力諸分量。"aerodynamics" defines the pressure fields and loads that exist on a launch vehicle due to the reaction of ambient flow.
「空氣動力學」規定了由於繞流反作用在發射飛行器上存在的壓力場和載荷。Precessing stars do radiate gravitational waves, but they ' re not the only ones. any asymmetry about the rotation axis will do
進動的星體確實會輻射引力波,但它們並非唯一的選擇。繞旋轉軸的任何不對稱都會導致引力波的產生。The new software named " d - gun " for ddos is carried out, which completed in windows 2000 and rethat linux. three characteristics of d - gun are lied out. first, it can complete all steps of attack automatically ; secondly, it support a lot of method of ddos, especially support echo attack method and pulsant attack method
本課題開發完成了一個獨立的分散式拒絕服務攻擊軟體,開發平臺是windows2000和redhatlinux ,其特色是跨平臺自動傳播,自動實現ddos攻擊的全步驟;支持多種攻擊模型,特別是構造了反射拒絕服務攻擊和脈動攻擊模型,攻擊強度高且難追溯;有一定繞過防火墻的能力。The hydrauli c model of gradual dike - break simulates numerically the 2 - d flow of gradual dike - break waves. it shows the variation of flow field on breach, and the complicated flow characteristic of the propagation, diffraction, reflection and deformation of the dike - break waves. the hydraulic model can realistically simulate the burst process of dike, and computational accuracy is satisfied with the engineering demands
本文建立逐漸潰堤的水力模型首次對二維逐漸潰堤波的流動問題進行了數值研究,揭示了逐漸潰堤過程中潰口處流場的變化情況,以及潰堤波的傳播、繞射、反射及變形的復雜運動特徵,能較好地模擬實際工程中的潰堤失事,模擬比較逼近於真實潰決過程,計算精度可滿足工程要求。Since the dichromated gelatin has a higher diffraction efficiency in all holographic recording materials, the aim of this research is to use dichromated gelatin as the recording material and to make use of the principle of holography to design holographic optical components, especially in fabrication procedure of dichromated gelatin film and in experimental technique to form a high diffraction efficiency using different angular exposure method
為了產生優質的聚焦能力與效率,本研究採用目前具有最高繞射效率( 80 ~ 90 % )的重鉻酸明膠材料作為感光劑,除了自行調制藥劑比例成分,並依嚴格的製作步製成重鉻酸明膠全像片外,並採用不同角度重覆曝光方式改良干涉式波帶板無法自動追蹤的缺點,經過多次試驗與改進,藉以形成具備高繞射效率和自動追蹤功能的全像光學波帶板。The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly, the research creates and solves the ship large amplitude motion equations. on the one hand, the actual calculation takes into account the coupling between the different motion modes, on the other hand, in the process of calculation of the ship hydrodynamic coefficient, it considers the influence of the nonlinear factor. the hydrodynamic coefficient used in the calculation of froude - krylov force, diffraction force and radiation force changes instantaneously following the draft, and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull
本文的研究分為二個部分:首先利用frank源匯法計算水動力系數,計算包括不同吃水時的附加質量和阻尼系數,吃水范圍涵蓋了船舶大幅度運動時所有可能的吃水;然後建立和求解船舶大幅度運動方程,在實際計算時一方面考慮了運動模態之間的耦合,另一方面在計算水動力時,考慮了非線性因素的影響。 froude - krylov力、輻射力、繞射力中的水動力系數隨吃水瞬時變化,靜浮力的計算精確到船體瞬時濕表面積,最後用四階龍格?庫塔方法在時域內求解船舶運動方程,並進行了載荷計算。During initiation, i felt very heavily burdened and uncomfortable. the contact person and the messenger asked if my reflexology treatments were like spiritual and psychic healing. i must have had a lot of ghosts around me at that time
印心時我感到很沉重的壓力和不舒服,聯絡人和觀音使者追問我是否反射治療有點像是靈療,我那時一定被許多的無形眾生所圍繞。Several research works are done in this paper according to the topics mentioned above : 1. looking up a lot of documents and materials about the microinjection technique, devices and the controlling technology of micro - fluid from outside and inside the country. based on the theoretical researches about the dna micro - fluid ' s dynamical characteristics, the controlling model of the microinjection volume is set up, and the experimental research on it is also done
圍繞上述內容,本文進行了以下幾方面的研究工作: ( 1 )查閱並分析了國內外大量的轉基因微注射技術及操作設備和微流體控制方面的文獻,在對dna微流體的動力學特性理論研究的基礎上,進行了微注射量的理論建模及實驗研究。The purpose of this work is to improve the space resolving power of the temperature measurement system for small laser - processed region. the main conclusions and contributions are as follows : 1. after expatiating upon the principle of radiation thermometry, we mainly discuss the effects on the space resolving power and the measurement precision of the real - time temperature measurement system by some factors
本文的工作就是圍繞輻射測溫系統空間分辨能力的提高技術展開的,主要的研究結果和創新之處如下: 1 .在闡述不接觸測溫原理的基礎上,討論了影響空間分辨能力及測溫準確性的兩種因素? ?強度點擴展函數有效分佈、進入系統中的雜散光。On the basis of this analysis the radiation and diffraction forces of the ship are calculated using these three methods and compared. at the same time vertical ship motions in regular wave are solved by these three methods. the results are compared to test each method ' s availability and suitability, thus the theoretical basis of optimize design of sea - keeping performance is provided
分別介紹了二維切片法、高速細長體理論和三維理論的基本原理,分析了三種不同方法各自的適用性,在此基礎上分別計算了船舶的輻射力和繞射力,比較了這三種方法的計算結果,為不同營運目的的船舶耐波性計算提供陜速有效而實用的計算方法;同時應用三種方法計算了船舶在規則波中的垂向穩態運動響應,比較三種方法的計算結果,測試各種方法的有效性和適用性,為船舶耐波性的優化設計提供原始的理論基礎; 2They found two events showing the shortening of pulsating cycle and decaying of radiations intensity. the signatures matched theories of what scientists would predict to see. when matter is falling so close to the event horizon, it will be circling the black hole with increasing speed and its light will rapidly dim as it is stretched by gravity to ever - longer wavelengths
研究人員分析了極大量來自緻密天體天鵝座xr - 1的紫外線輻射,發現其中兩組數據顯示,輻射脈沖的周期隨時間縮短,而其強度則隨時間衰減至消失,這現象與一些物質在接近黑洞視界時繞著黑洞急促旋轉,放出的輻射因為重力紅移而衰減的情況相符。Computation of first - order wave force was simplified, and second - order wave force included second diffraction of second - order incident wave
對一階波浪力計算進行了進一步的簡化,在二階力的波浪力計算中考慮了二階入射波的二次繞射。This system enables a telescope to work at or close to its maximum resolving power, limited only by diffraction, as though the atmosphere were not even there
這套系統使得望遠鏡能夠發揮最高或接近最高的解析力,僅受到繞射所限,彷佛大氣不存在一般。Berlin - scientists on tuesday readied a russian booster rocket carrying a european - built probe aimed at exploring the hot, dense atmosphere around venus
科學家準備發射帶有歐洲製造的探測器的俄國助力火箭,探索環繞金星外炙熱的高密度的大氣層。Standard test method for examination of gas - filled filament - wound composite pressure vessels using acoustic emission
利用聲輻射檢查充氣的絲繞復合材料壓力容器的標準試驗方法分享友人