solid beam 中文意思是什麼

And it is also found that the polarized incident gauss beam become depolarized after emitting from the bottom of solid immersion lens. the beam dimension of the emitting optical field at the near - field bottom of solid immersion lens is " broadened "

在固體浸沒透鏡底面的近場區域，出射光場發生了退極化，使得出射總場的光斑有了一定程度的「增寬」現象。

The optical field attenuates as exponential function and the transmitted beam expands quickly with the increase of the distance away from solid immersion lens

固體浸沒透鏡的折射率越大，底面出射的光斑越小，但隨著離開固體浸沒透鏡底面距離的增加，光斑增大得越快。

The optical near - field distribution and propagation properties of solid immersion lens system are analyzed in detail when illuminated by linearly polarized focusing gauss beam. the change of the optical intensity and beam dimension at the bottom of solid immersion lens with different refractive index and different distance are discussed. the simulated results reveal that the higher the refractive index is, the stronger the optical intensity and the smaller the beam dimension at the bottom of the solid immersion lens will be

編制了對固體浸沒透鏡近場超高密度光存儲系統進行模擬的二維時域有限差分程序，實現了對固體浸沒透鏡光存儲系統的數值模擬；著重研究了線偏振的高斯光束通過固體浸沒透鏡的光傳輸和近場光場分佈特性；分析了固體浸沒透鏡底面出射光強、光斑直徑隨固體浸沒透鏡折射率的變化、光透過固體浸沒透鏡后的強度、光斑直徑隨離開固體浸沒透鏡底面距離的變化。

The ratio of the flux emitted within the solid angle defined by the beam spread, to the bare lamp flux

由光束角限定的立體角內輻射出的光通量與裸光源光通量之比。

In the last, silo structures or its base is simplified as suspensory beam, witch ca n ' t correspond with project practice o considering the interaction among bulk solid, structure and its foundation, a semi - analytic element method static and dynamic analysis on silo structures on elastic foundations is presented in this paper

本文以某大型筒倉結構為例，考慮到散體、結構、地基的相互作用與影響，考慮地基與基礎及結構的耦合問題，採用半解析半數值的方法對彈性地基上的筒倉結構進行了靜、動力的分析計算。

During the past several years, due to significant advances in the development of solid state components and high speed signal - processing technology, multi - beam array imaging systems, which promise an increase in sensitivity and resolution have received considerable interest in both the military an civilian applications

近年來，隨著毫米波固態器件以及高速信號處理技術的迅速發展，高靈敏度、高解析度的多波束陣列目標探測技術正引起軍事和民用領域濃厚興趣。

Based on the research to the stability variable cross - section beam, the bending defection differential equation of the variable cross - section beam in critical state of bucking is established. according to the edge condition of the structure, the differential equation is solved and bucking equation of variable cross - section beam is created. we can get the algorithm which can be used to calculate the equivalent inertia moment of the variable cross - section lattice structure when it is regarded as constant cross - section of solid web beam

對變截面格構式構件的穩定性計算進行了初步的研究，通過建立變截面構件臨界狀態下彎曲變形的微分方程，根據變形邊界條件，得到了兩端鉸支的變截面梁失穩特徵方程，提出了幾種特殊形式的變截面格構式構件等效為等截面實腹式構件時等效慣性矩的計算方法。

As a high - power twt, we consider the relativistic effect of the solid beam. the numerical results are given in terms of the small signal gain curve and slow - wave ration curve

作為大功率的行波管，我們考慮了電子注的相對論效應，數值求解「熱」色散方程，得到脊加載盤荷波導幾何參數和電子注參量與小信號增益的關系。

According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。

According to the principle of a new scanning electron microscope and the mechanism of the interaction between electron beam and solid target, the trajectories of an incident electron in a sample are simulated, a simulation program is compiled using the monte carlo method, and the backscattering coefficients corresponding to different parameters of the sem are obtained

摘要根據新型分析掃描電子顯微鏡的工作原理及載能電子束和固體相互作用原理，利用蒙特卡羅方法模擬入射電子和靶物質的相互作用過程，編制了蒙特卡羅模擬計算程序，獲得了對應不同電鏡工作參數的入射電子背散射率。

Elemental analysis based on the emission from plasma generated by focusing a powerful laser beam on a solid sample surface is known as laser - induced breakdown spectroscopy ( libs ). when the power density of laser on the sample surface is high enough, the sample is vaporized, and the neutral and ionic species are formed in excited states

利用聚焦的強激光束入射固體靶表面產生激光等離子體，對等離子體中原子和離子發射譜進行雜質元素分析，這一過程叫做激光誘導擊穿譜（ laser - inducedbreakdownspectroscopy ） ，簡稱（ libs ） 。

The main conclusions and original results are summarized as follows. the manganin ultra - high pressure sensors for gas gun were made by two - step thin film techniques, namely, manganin thin films were first deposited by magnetron sputtering on fused silica substrates, and then covered by a layer of sio2 thin films by electron beam evaporation. consequently, the manganin sensing elements were " cleanly " encapsulated in inorganic solid matrix and the high - pressure shunt effect was eliminated radically

上述技術的主要優點在於可以採用高壓絕緣性能更好的無機物作為絕緣封裝材料，如本研究中所採用的sio2 ，而代替在箔式錳銅計中所使用的ptfe ；並可實現敏感元件「清潔」地無機固態封裝，即將整個敏感元件是包封在無機物中，而不與高壓力下絕緣性能相對較差的有機物，如粘接劑、樹脂等直接接觸，從而在根本上消除了高壓旁路效應。

Advanced mathematical technologies, especially the newly developed wavelet transform and the frame theory, provide a solid foundation for such an effort. the ray - theory based beam - summation method, such as the complex source - generated beam and the gaussian beam methods, and the local phase - space domain ( beamlet domain ) wave field extrapolation methods employing windowed fourier transform ( wft ) or wavelet transform are proposed consequently

基於射線理論的高頻漸近射束（復射束、高斯射束）疊加方法，以窗口富里葉變換（ wft ）以及小波變換為基礎的局部相位-空間域（小波束域）波場外推方法等相繼產生。

Laser - diode end - pumped solid - state laser has many advantages, including high efficiency, good beam quality, high frequency stability, narrow line width, long lifetime, compact configuration, convenient for using et al. especially, single - frequency solid - state laser sources are required for many fields of fundamental research and scientific application, such as gravity - wave detection, coherent laser radar, coherent communication and fiber sensing

激光二極體泵浦的固體激光器具有全固態、小型化、效率高、使用方便等優點而受大家的廣泛關注，尤其是實現單頻運轉的全固態激光器以其優良的頻率特性和輸出功率穩定性可廣泛應用在相干信息處理、頻率計量、量子光學、引力波測量和量子信息等研究領域。

How to improve the output energy and beam quality were two most noteworthy problems in the building of high power solid - state laser facility

提高系統能量轉換效率與輸出光束質量一直是研製高功率固體激光系統極為關注的兩類重要問題。

As far as the solid inclined column - wall transfer r. c joint is concerned, the inclined column with a bigger angle 、 transfer beam and square column work as a whole, and the load transfer mechanism is similar to the transfer beam. the stress state in the wall is much more even, so the effect of transfer is much better than that of the hollow inclined column - wall transfer r. c joint

對無孔斜柱轉換節點而言，由於斜柱與轉換梁和方柱形成了一個整體，而且斜柱角度較大，因而其傳力機制和加腋的轉換梁類似，但薄壁柱中的應力分佈更為均勻，轉換效果更好。

Analysis system for bridge test ( qljc in chinese ) is an application software specially designed for bridge test to build spatial fem model of bridge structure with beam elements or solid elements, analyze the static and dynamic character of bridge structures, calculate efficiency ratio of load test, pick up the results of observation points and so on

摘要橋梁結構檢測分析系統qljc是針對橋梁檢測試驗分析開發的專用軟體，能夠建立橋梁結構空間有限元模型，運用實體單元法和空間梁格法進行靜動力試驗分析、試驗荷載效率計算，查取測點位置理論計算值等。

In high - power solid - state lasers, self - focusing is the major factor for degradation of laser beam and limits the maximum laser power available. as stated in lowrence livermore national laboratory ( llnl ) reports, self - focusing, especially small - scale self - focusing, has always been a significant problem in the total design, engineering development, and safe operation of fusion lasers

在用於慣性約束核聚變（ icf ）的高功率固體激光驅動器中，自聚焦是使光束質量變壞和限制輸出功率的主要因素，正如美國勞侖斯?利弗莫爾國家實驗室（ llnl ）的報告所述，自聚焦，特別是小尺度自聚焦，是聚變激光器總體設計、工程研製和安全運行的重要問題。

Therefore, the light steel portal frame system is compared comprehensively to the bent frame system of solid - web steel column and solid - web steel plate beam, the bent frame system of solid - web steel column and open - web steel pipe truss, as well as the system of rc column and open - web steel pipe truss

因此對中小型單層廠房中實腹式鋼柱加實腹式鋼板梁排架體系，實腹式鋼柱加空腹鋼管桁架排架體系以及鋼筋混凝土柱加空腹鋼管桁架排架體系與輕鋼門式剛架進行了綜合比較。

Based on matrix displacement method for arch structure and fiber element method for concrete - filled steel tube arch bridge, the solid - beam method for concrete - filled steel tube arch bridge was presented

摘要本文結合拱結構計算的矩陣位移法和鋼管混凝土拱橋分析的纖維單元法，特提出鋼管混凝土拱橋計算的實體梁單元法。