透射中心 的英文怎麼說
中文拼音 [tòushèzhōngxīn]
透射中心
英文
center of penetration-
And the explicit finite difference method, the combining method of the central difference method and newmark s constant average acceleration method, and the transmitting boundary are used. by comparing the acceleration determined by the several methods of the displacements or velocities, a computing method of acceleration employed the one side difference of velocity is more practicality in this research. corresponding to normal incidence of the body waves, p waves or svwaves, and rayleigh surface waves, two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media
以土力學模型為基礎，利用以土骨架和孔隙流體的四個位移為基本未知量的數值方法去模擬二維飽水介質中的地震波傳播，採用了顯式差分方法（中心差分法和newmark常平均加速度法結合）和透射邊界，通過比較利用幾種差分格式求解的加速度結果，發現一種用速度單邊差分求解加速度的方法在本文研究中較為實用，分別編制了體波（ p波或sv波） 、 rayleigh面波輸入時求解兩相介質動力響應的兩個二維數值分析程序。When a collimated - well gaussian laser beam passes through a 27i - phase plate and then focused by a lens, a focused hollow beam ( fhb ) will be generated behind the lens, as a result of the completely ( r = 0 ) and partially ( r 0 ) destructive interference effects around the central region of the beam
當一束準直的高斯光束通過具有2位相分佈的位相片和一個薄透鏡時，這將導致在入射高斯光束中心的完全和部分相消干涉效應，於是在透鏡后就會形成一束聚焦中空光束（ fhb ） 。When only allows the total internal reflection beams focus on the small aperture, which is formed at the center of metal film coated on the bottom of solid immersion lens, the optical fields propagated from the aperture of different dimension is first simulated
根據衍射超分辨原理首次模擬出了底面鍍有金屬膜、中心留有通光微孔的固體浸沒透鏡的出射光場分佈。The transmittance is central to the theory of radioactive cooling.
透過率是輻射冷卻理論的中心。Vecon - con system is triggered by 4 infra - red sensors along the selected lanes with 2 in pairs. false trigger by wind shield and container - type trucks are dalian yaowan phase ii screened out and the system captures and recognizes container numbers, country codes, iso codes automatically in less than 0. 012 seconds from trigger till image capture. the captured images are transmitted to the tos for processing which enhances efficiency and ensures security while maintaining manpower at the minimal
Vecon - con透過四個紅外線對射敏應觸發器進行觸發，兩個一組並列于車道上，具備防止集裝箱型卡車大型集裝箱車拖頭等誤觸發，系統接收到觸發信號后，自動抓拍集裝箱號碼國家代碼箱形代碼，抓拍的圖像會被傳送到碼頭控制系統中心進行后臺處理，該系統由觸發到抓拍只需不多於0 . 012秒，整個系統大大提高了口岸工作效率，並減低了人力物力的耗用，為港口碼頭的管理提供了更加高效可靠的處理手段。A little ferrite and cementite, through the analysis of the strengther and ductiler, we draw the conclusion that this is very important in reality, observing the graphite nodule in sem and tem, there are many spheroiding element and anti - spheroiding elements in the core and edge of graphite nodule, they form the oxides sulphide and nitride. we draw the conclusion that they may be the core of graphite nodule
在掃描電鏡（ sem ）與透射電鏡（ tem ）上觀察石墨球，與傳統石墨球相比低碳球鐵的石墨球呈細小點狀分佈，球墨中心聚集有較多的球化元素而在邊緣處分佈有反球化元素。石墨球中心存在有氧化摘要一物、硫化物以及氮化物等組成的復雜的化合物，經分析認為它們是球狀石墨形核的有效核心。For bilateral symmetry objects, the techniques on symmetry - point detection and symmetry - axis extraction are presented based on harmonic conjugation relationship. for rotated symmetry objects, the techniques on rotated units description and rotated symmetry center extraction are presented based on center invariants of objects. further more, by using 3d invariants and 2d projective transformation, an approach to recover shape from part symmetry objects is realized on some conditions
（ 3 ）深入分析了2d對稱性目標透視成像的幾何特點，將共點四線交比用於目標輪廓上的關鍵點的特性描述中；利用調和共軛關系，提出了一種針對左右對稱型目標的對稱點檢測和對稱軸提取的演算法；利用交比關系構造了目標的形心不變量，提出了一種針對旋轉對稱型目標的旋轉對稱單元判定、旋轉中心提取的演算法；進一步利用3d不變量和2d射影變換，實現了一定條件下的對稱性目標的形狀恢復技術。I also carried some research on the bragg grating composed by alternate left - handed material and right - handed material. in the reflective spectrum of the bragg grating, there exists bragg top zone ( with reflectance almost 100 % ). however, i found that there exists some narrow transmission bands located in the bragg zone under some conditions
另外，這篇論文里還要講到正負交替的材料組成的布拉格光柵也有很反常的現象，在光柵的反射譜上，我們不僅可以觀察到和傳統布拉格光柵相類似的布拉格平頂區，我們還可以看到在一定條件下，布拉格平頂區中會有一個很窄的反常透射區，也就是說只有很窄區域的波長可以透過光柵，而且中心波長是100 %透過。A distant field interference of non - single - core light beams is analysed in a transparent liquid or solid when the bubble is irradiated with laser, a formula on optical path length difference is derived, interference regions and causes of interference rings thick inside and thin outside are analysed, the diameter of bubble can be measured by method of interference, the size of bubble and refraction index of gas inside the bubble can be measured in the depths of medium
摘要對透明液體、固體中氣泡在激光照射下產生的一種非單心光束干涉進行了遠場分析，得到了程差公式，分析了干涉的區域、圓環狀干涉條紋內密外疏的原因，通過干涉的方法可以測量氣泡的直徑，能夠用於介質深處氣泡尺寸及泡內氣體折射率的測量。However, it ceased publication after liberation but resumed distribution in 1996. the book, which is a collection of articles chosen from the magazine ? back issues, presents a picture of life of the family in different periods from which the reader can learn something about people ? thinking and feelings characteristic of the stable stages of china
本書從該刊中精選了文章若干篇，反映了不同時代張家不同人物的生活經歷和悲歡離合，皆為真情實感，透過一家的興衰變化，折射出中國歷史穩定時期人的心靈和文化感悟，極具資料性和可讀性。The results show that the study on transimittivity can be done using the points along the circle arc centered at the roadway or the boring core, the transimittivity at the joints along the right angle ray can be studied using one single point behind the joint, and the studies on transimittivity can be done on any reasonable radius value of the roadway or boring core in a typical rock
分析結果表明：單節理后各節點透射率的研究，可以通過單節理后某一以巷道或鉆孔中心為中心的圓弧上各節點的透射率來展開；射線角為90的射線上節理后各節點透射率的研究，可以通過節理后某一節點的透射率來展開；單節理的透射率的研究可以在一個固定半徑值的巷道或鉆孔的模型上用一種典型的巖石進行。These mesmerizing insects, indigenous to the rain forests of central and south america, get their cobalt hue not from pigment but from the thousands of semitransparent scales that filter blue from the visible spectrum and radiate it out from the wings
這是一些用催眠術的昆蟲，生活在熱帶雨林中心和南美洲，大閃蝶的顏色不是來自色素但是來自數千個半透明的魚鱗或介殼，使得大閃蝶變得有很明顯的光輻射。分享友人