透射力 的英文怎麼說

中文拼音 [tòushè]
透射力 英文
admittance
  • : Ⅰ動詞1 (滲透; 穿透) penetrate; pass [seep] through 2 (暗地裡告訴) tell secretly; let out; lea...
  • : Ⅰ動詞1 (用推力或彈力送出) shoot; fire 2 (液體受到壓力迅速擠出) discharge in a jet 3 (放出) ...
  • : Ⅰ名1 (力量; 能力) power; strength; ability; capacity 2 [物理學] (改變物體運動狀態的作用) forc...
  1. 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響應的兩個二維數值分析程序。
  2. In experiment, the dsc technique was used to analyze the effect of electric fields on the precipitate kinetic of al - li alloy solutionized with electric fields. the energy spectrum, tem and sem techniques are employed to investigate the elements solution, precipitates, fracture character, conductivity and vickers hardness. also, the solidification of al - cu eutectic alloy was conducted with the influence of electric fields

    在實驗上,利用dsc熱分析技術,分析了電場作用對al - li合金相析出動學的影響;採用能譜成份檢測,電鏡和掃描電鏡等多種微觀檢測手段,對鋁合金的析出相,斷裂特徵、合金電導率和維氏硬度等性能在電場作用下的變化進行了系統的研究,並觀察了al - cu共晶合金在電場作用下的凝固組織。
  3. By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent

    最後,本文還對絮凝動學和絮體結構進行了研究,在前人研究的基礎上,針對高分子絮凝黃河泥沙,對絮凝過程作了一些符合試驗條件的假設,建立了顆粒碰撞頻率表達式,應用了顆粒數量平衡方程,從而建立了絮凝過程的動學生長模型,模型計算結果與試驗數據對比表明,二者趨勢一致,在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程;對絮體結構的研究中,應用掃描電子顯微鏡和電子顯微鏡對絮體進行了觀察,將絮體分為絮粒、絮團和絮網三個不同的生長階段,通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體,建立了絮體結構模型,計算得到的模型絮體分形維數基本與試驗中的實際絮體相符,在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。
  4. Among the five kinds of nde ways ( rt, ut, et, pt, mt ), ultrasonic testing technology develops very fast because of its merits such as good orientation, strong penetration ability, higher energy and no harm to human health

    在五大常規無損檢測方法中(線、超聲、渦流、滲、磁粉) ,超聲波無損檢測因其方向性好、穿強、能量高以及對人體無害等優點而得到了迅速發展。
  5. The energy band of hard x - ray, with strong penetrability, is an important astrophysical wave band

    硬x線能段是天體物理的重要波段,由於具有較強的穿,因而它可以攜帶輻區的很多信息。
  6. With the material dynamic constitutive equation including damage and the effect of stain rate the predictable formula about ballistic limit velocity of fiber composite target. secondly based on the damage feature about ceramic / fiber composite target caused by impact load, analysis model about defense performance of ceramic / composite material target is formed and the predictable formula about ballistic limit velocity is also given. lastly using the reflection and projectile theory of stress wave the paper discusses the design of ceramic / composite material target, optimizes the design of double layer ceramic / composite targets, gains optimal coefficient under certain area density and discusses the variety relationship of area density and thickness with optimal coefficient u nder some ballistic limit velocity 3

    首先,分析了纖維類正交鋪層復合靶板在沖擊載荷作用下的損傷破壞機理,結合包含損傷和應變率效應的材料動態本構方程,建立了纖維復合材料板彈道極限速度的預測公式;其次,根據陶瓷/纖維材料復合靶板在沖擊載荷下的破壞特點,建立了陶瓷/復合材料靶板抗彈性能分析模型,給出了彈道極限速度預測公式;最後,利用應波反理論討論了陶瓷/復合材料靶板的設計問題,對雙層陶瓷復合靶板的優化設計進行了分析,給出了在一定面密度下的最佳優化系數,討論了一定彈道極限速度下的面密度和厚度隨優化系數的變化關系。
  7. So, in order to discover essential properties, the paper focuses on deep study upon the wave forces over submerged dyke and transmission coefficient considering the band protecting and silt promoting project in shengli oilfiled, which may be used for real engineer

    本文以潛堤為研究對象,通過物理模型試驗的方法,分別研究了在規則波作用下潛堤的波特性和特性。
  8. Submerged dyke is a common offshore structure, which is widely used for band protecting and silt promoting engineer and etc. however, few research studies are done upon such a problem home and abroad and even the accomplished results are not satisfying, which cannot be used for real projects, and in most cases, they will have to depend on the results of experiment

    然而,目前國內外對潛堤的研究很少,研究的成果也很不成熟,難以應用到實際工程設計中,在很多時候,還需要藉助於物理模型試驗,因此,本文結合勝利油田保灘促淤新技術研究項目,對潛堤波浪以及特性進行了深入系統的研究,求揭示其內在規律,期望能獲得有實際應用意義的研究成果。
  9. The results show that the penetrability of powder loads can be improved when suitably reducing bulk density and grain size of gun propellant, increasing nitrogen content of nc and choosing oblate spheroid explosive respectively under the constant test conditions

    結果表明,在其它試驗條件不變的條件下,適當降低發藥堆積密度、適當提高發藥中硝化棉( nc )含氮量、選用恆面燃燒的扁型藥、降低發藥粒度均有利於提高釘的穿
  10. The alpha particles released from polonium - 210 have a very low penetrating power and can be stopped easily by the outer layer of skin or a sheet of paper. it is unlikely that the particles can affect human body through direct irradiation. however the ionization power of alpha particles is very high

    釙210釋放的阿爾法粒子穿很弱,人類的皮膚或一張紙已能隔阻它,粒子經照影響人體的機會很微,不過由於它的電離能很強,如果人類吸入或進食含有釙210的物質,其釋放的阿爾法粒子就能直接破壞內臟細胞,即使所吸收的份量不多,也會損害身體健康,急性高劑量阿爾法輻可以引致輻中毒。
  11. The composition, structure, and properties of the as prepared composite films have been characterized in detail by uv - vis, ftir, and x - ray photoelectron spectra, ellipsometry, scanning electron microscopy, atomic force microscopy, transmission electron microscopy, fluorescence spectroscopy, and standard four - probe technique

    採用uv - vis光譜、 ftir光譜、 x -線光電子能譜、橢圓光度法、掃描電子顯微鏡、原子顯微鏡、電子顯微鏡、熒光光譜和標準四探針技術對所制備的納米復合膜進行了組成、結構和性能表徵。
  12. A switchable and spacing - tunable dual - wavelength linear cavity edfl is demonstrated experimentally using this kind of bragg grating for wavelength selection. it exploits the birefringence characteristic of the fbg induced by transverse strain. transverse strain loading on the fbg allows the wavelength spacing to be controlled while axial strain shifts both wavelengths together

    2 .對軸向及側向應共同作用下的光纖布拉格光柵的及反光譜特性進行了理論及實驗研究,並首次把軸向及側向應共同作用下的光纖光柵應用於光纖激光器進行波長選擇,得到了室溫下穩定工作的波長及波長間隔可調的可開關雙波長的摻鉺光纖激光器。
  13. The dispersion of the modified nano - sized caco3 in the pvc matrix was observed in tem ( transmission electron microscope ). the influences of surface treatment and the contents of nano - sized caco3, extrusion technology and other additives on the properties of the composites were investigated. the results show that the surface treatment of the nano - sized caco3 particles with wet method enlarged the specific surface area and reduced the surface energy of the particles, and made the particles dispersed at the nanometer level in the pvc matrix, which improved the mechanical properties of the composite

    本課題為了解決納米caco _ 3在pvc中的分散問題,對納米caco _ 3粒子進行了濕法處理,採用雙螺桿擠出法制備出具有良好性能的pvc -納米caco _ 3復合材料;對復合材料的學性能和加工性能進行了測試;利用tem ( transmissionelectronmicroscope ,電子顯微鏡)觀察了納米caco _ 3粒子在pvc基體中的分散情況;討論了納米caco _ 3的表面處理方法、納米caco _ 3的含量、復合材料的制備工藝以及各種助劑對復合材料各項性能的影響。
  14. Powders properties of different phases such as the granularity, the shape and the component have been analyzed by the methods of sieving, gravity sedimentation, spectrophotometry, scan electronic microscope ( sem ), transmission electronic microscope ( tem ) and x - ray diffraction ( xrd ). the results show that technic of ball milling and parameters of heat treatments are important influencing factors to properties of cu - zn powders

    採用篩分法、重沉降法、分光光度法、掃描電鏡法、電鏡法和x線衍法對不同階段的銅鋅粉末的粒度、形貌、成分等性質進行了分析,結果表明:球磨工藝及熱處理參數對銅鋅粉的性能有重要影響。
  15. Furthermore, we compared the mechanical properties between the modified nano - cac03 / pp and unmodified nano - cac03 / pp. we have investigated the composites by means of mechanical testing, dsc, xrd, ft - ir, tem, sem, etc. the relation between the structure and property of the composites has been discussed in this thesis. we studied the nano - particles by means of ls particles size analysis, we also studied the modified nano - cac03 by means of ft - ir

    論文中對caco _ 3粒子進行了粒度與比表面測試分析,對經鈦酸酯偶聯劑表面改性的納米caco _ 3粒子進行了紅外吸收光譜分析,對改性后的復合材料進行了學性能測試、差熱掃描量熱分析、 x線衍譜、紅外吸收光譜、電鏡、掃描電鏡等分析,討論了樣品中結構和性能之間的關系。
  16. We also report the uv - visible optical absorption spectra of these colloids. to the metal plate prepared simultaneously, the measurement result of sem and afm of this plate is also reported and the roughness of the silver plate surface is about 60nm. both the colloids and the nano - scale metal surface can become the very perfect sers substrates. rhodamine b, a kind of strong fluorescence laser dye, with gold colloidal surface, has been studied by surface - enhanced raman spectroscopy ( sers ) with near - infrared ( nir ) excitation in the presence of the halide ions ( cf, br -, f )

    利用電子顯微鏡( tem ) ,對膠體粒子的尺寸大小及形態進行了觀測,表明這些膠體為粒徑介於5 35nm的納米體系,並對該膠體體系進行了紫外?可見吸收光譜的研究;在制備出金屬膠體的同時,經過激光照后的金屬表面為納米量級的粗糙表面,對該表面進行了掃描電鏡( sem )及原子顯微鏡( afm )的測量,結果顯示該表面的粗糙度平均為60nm 。
  17. Abstract : from the equilibrium and continuity conditions of wave impedance boundary of stress wave and velocity, wave, the paper derives the expressions of reflection coefficient and transmission coefficient of stress wave and velocity wave, further, discusses the characteristics of f - v curves at different impedance ratio, and analyzes the application of these characteristics to ascertain the defects of pile and soil resistance distribution around pile by practical engineering examples

    文摘:該文從波及速度波在波阻抗界面的平衡及連續條件,推導了波、速度波的反系數、系數表達式,進而討論在不同阻抗比時的f ? v曲線特徵,並引用幾個工程實例對應用這些特徵判定樁身缺陷及樁周土的阻分佈進行了分析。
  18. Based on the sound wave transferring theory of infinite elastic and viscoelastic materials with the method of transferring matrix, the formulas of transmission coefficient and the level of sound insulation are gained, which consider shearing strength in the rubber, and the sound insulation properties of compound structures are discussed in condition of oblique incidence

    摘要基於無限大彈性體和粘彈性體的波傳遞理論,採用傳遞矩陣的方法,對斜入情況下的系數和隔聲量進行了理論推導,考慮了聲波在橡膠中傳播所產生的剪切,並就單層復合結構的隔聲性能進行了詳細的研究,進而也分析了多層復合結構的隔聲性能。
  19. This makes it possible to know the load by studying the pbg property or to change the pbg property by loading

    這樣,就可以通過測量光子晶體的光帶隙性能來判斷壓的大小,也可以通過施加載荷來調制光的波長。
  20. Calculation method and affecting factors of productivity for deep penetrating perforation with hydraulic jet flow

    深穿孔產能的計算及影響因素
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