界射線 的英文怎麼說
中文拼音 [jièshèxiàn]
界射線
英文
grenz rays-
Due to nonlinear bottom boundary condition, the generation of internal tides over finite topography can only be deal with by using of ray - tracing method beforetime. the transforms introduced in this dissertation make it possible use eigenvalue method to investigate the generation of internal tides over finite topographies
由於非線性邊界條件的使用,前人處理有限地形上內潮的產生問題只能求助於射線理論,本文提出的坐標變換將若干海底地形變換成平底,從而使得利用特徵值方法研究這些地形上的內潮生成問題成為可能。Surgery and x-irradiation nevertheless remain the bulwarks of cancer treatment throughout the world.
外科手術和X射線療法依然是全世界治療癌癥的主要方法。Authigenic minerals and their occurrence in the meso - cainozoic reservoir sandstones were observed and analyzed by optical microscope, sem, epma and xrd
採用光學顯微鏡、掃描電鏡、電子探針及x射線衍射觀察分析了塔里木盆地中新生界儲層砂巖自生礦物及其在巖石中的產狀。Recent study of the kilohertz quasi - periodic oscillations ( qpos ) in low mass x - ray binaries ( lmxbs ) indicates that the radiation force, other than the magnetosphere and disk interaction and the general relativity ( gr ) effect setting the inner disk edge, serves as the disk truncation mechanism on shorter time scales. some results and discussions are presented in this paper
最近對低質量x射線雙星中的千赫茲準周期振動的研究表明,是輻射壓力,而不是盤和磁球的相互作用以及處于盤內邊界的廣義相對論效應在短時標的盤切斷機制上起作用.本文給出了一些研究結果及討論The results show that the solidification microstructure of high speed steel fe - 2 % c - 4 % v - 4 % mo - 5 % cr - x % w ( wt ) contains of martensite, retained austenite structure, and mc, m6c, m2c carbides, and mc / m2c complex carbides by xrd, sem and metallographs. most of the mc carbides locate in the cell and other carbides distribute along the boundary of the cell
結果表明:經金相組織觀察、 x射線衍射和掃描電鏡分析, fe - 2 c - 4 v - 4 mo - 5 cr - x w合金系高速鋼凝固組織包含馬氏體基體、殘余奧氏體及各種類型的碳化物如mc型碳化物、 m _ 2c型碳化物、 m _ 6c型碳化物和mc m _ 2c類型復雜碳化物,大部分mc型碳化物分佈於晶粒內部,其它類型碳化物則沿晶界呈網狀分佈。The melted tungsten carbide would react with the steel matrix on the interface and the reaction zone was observed as a result. the reacting production was examined as fe3w3c by means of x - ray diffraction and scanning electron microscopy analysis. the reaction between tungsten particle and steel matrix could improve the interfacial bonding strength remarkably
Wc鋼復合材料的制備過程中, wc顆粒在高溫下發生了局部溶解並在wc顆粒和鋼基體界面處發生了界面反應; x射線衍射和電子衍射花樣分析表明,反應產物為高穩定性的fe _ 3w _ 3c ,界面反應有效地改善了wc顆粒與鋼基體的界面結合。Grenz ray apparatus
跨界射線治療器In this thesis we propose a scaling trust region interior point algorithm for linear constrained optimization subject to bounds on variable
本文將提出一種仿射變換的信賴內點演算法解決變量有界的線性等式約束優化問題。Basing on the mcnp software, the author solved the matter by calculating the value of point to replacing the value of cell or surface. the research searched out a new means to solve similar matters. by using the studying result, the author programmed the gamma code, with the interface of window, which can simulate the course that a y - detector measures the radioactivity in soil and calculate the dose ratio and the chart of energy deposition
作者以以上方法為基礎開發出了就地譜儀模擬軟體gamma ,軟體基於mcnp軟體平臺,具有可視化介面,用於模擬譜儀現場測量,可視化窗口界面使用戶可以方便地調節探測器內部結構的幾何尺寸及窗材料、測量高度、射線能量及發射率、核素在土壤中的分佈規律等參數,方便工程技術人員的使用。How improving the capability of ict has become more and more an important task, for example, improving spatial resolution and density resolution, reducing scan time, enlarging the size of measure space, improving image quality, etc. moreover the question of the energy spectrum hardening and the photon scattering is one of important bottleneck to restrict the improvement of ict
如何提高工業ct的性能指標,如怎樣進一步提高空間解析度、密度解析度,減少掃描時間,增大可測工件尺寸,改善圖像質量等等成為了ct界面臨的重要任務。而其中射線的能譜硬化和散射問題,又是制約工業ct各項性能指標提高的重要瓶頸之一。Study of emitting system in microfocal x - ray source with bem
射線源的邊界元法分析Grenz ray tube
境界射線管It is found that : ( 1 ) for linear slope, redistribution of incoming energy flux in modenumber space depends on both the modenumber of incident waves and the ratio of the slope of incident wave ray to slope of topography ; both the transmitted and reflected energy flux ( only for supercritical linear slope ) focus near one or two modenumbers ; for supercritical linear slope, the energy flux scattering to higher modenumbers becomes larger and the energy flux to lower modenumbers becomes smaller as the slope of incident wave ray comes near to slope of topography ; ( 2 ) for convex slope, energy flux is redistributed in wide - range modenumbers and also show peaks on lower - modenubers and higher - modenumbers ; ( 3 ) for concave slope, energy flux is also redistributed in wide - range modenumbers, but does not show peaks on higher - modenumbers as supercritical linear slope and convex slope do ; ( 4 ) the total energy flux scattering to higher modenumbers is approximately equal to the total energy flux to lower modenumbers for internal waves propagating over both convex slope and concave slope, which means the concave slope is the same efficient to convex slope in scattering energy flux to higher modenumbers ; ( 5 ) for convex slope, the wave ray reflected from near - critical topography can extend to deep ocean and shallow shelf, while for concave slope, the wave ray reflected from near - critical topography can only extend to limited distance, then meet the topography and be reflected again ; generally the shear of the internal waves reflected twice from concave slope is not enhanced while the enhanced shear does also appear before second reflection takes place, the enhanced shear can bring about intense mixing, so internal waves reflected from concave slope can also produce marked mixing near critical slope
3 、內波在凹地形上傳播時,能通量在模態上的分佈范圍也比較寬,但與凸地形和超臨界線性斜坡地形相比,能通量在高模態上的分佈沒有明顯的峰值。 4 、從總的能通量來講,內波在凸地形和凹地形上傳播時,向高模態散射的能通量與向低模態散射的能通若十地形下內波傳播及內潮生成問題的理論解量近似相等,這意味著二者在向高模態散射能通量方面具有同等效率。 5 、凸地形上臨界點附近的反射,反射波的波射線能夠延伸到深海和陸架,凹地形上臨界點附近的反射,反射波的波射線很快遇到地形發生二次反射,一般來講二次反射后回到深海的波動其速度剪切並不很強,但是在進行二次反射之前的區域,速度剪切仍然很強,因而內波在凹地形上的反射依然能夠在地形附近區域,產生強的速度剪切區,誘發混合。In the experiments, two series of catalysts were synthesized by co - deposition and sol - gel methods each. the composition of both waterproof and gas diffusion layer and catalysis layer were optimized by the orthogonal test. meanwhile, quasi - steady cathode polarization curves, x - ray diffraction ( xrd ), scanning electronic microscope ( sem ) were used to analyst the relationship between the microstructure and the performance of air electrode
實驗採用共沉澱法和溶膠凝膠法合成了兩類催化劑;對防水透氣層和催化層進行了正交試驗優化;同時,還採用測準穩態極化曲線, x射線衍射( xrd ) 、掃描電子顯微鏡( sem )等分析測試手段,對空氣擴散電極催化材料、空氣擴散電極界面結構與性能的關系等作了較深入的研究。At first, it describes structure of the full - length prototype, manufacturing craft and prepare to work, including sting, sealing, wire tension and leak current measurement, mounting of the preamp, gas system, high voltage system, reduction of noise and so on. the construction of full - length prototype provided valuable experience and important reference to the besiii drift chamber. then good function of the full - length prototype was performed using 55fe 5. 9kev x _ ray source. we can see that the uniformity of gas gain of the full - length prototype is well and it is effective for the compensation voltage to adjust the uniformity of gas gain of the boundary cells
為了初步測試模型的性能用55fe5 . 9kevx射線進行了氣體增益的均勻性檢測,隨之用55fe5 . 5kevx射線初步測試了模型性能,對部分高壓和補償電壓的設置進行了調整,驗證了對邊界場絲層加補償電壓能夠有效地調節邊緣層氣體增益的均勻性,實驗結果表明全長模型能正常工作並具有良好的性能。In succession, tini thin film is deposited on single - crystal silicon substrate using optimized parameters utilizing sputtering, and its transformation temperature ( a * ) is 72 ? indicated by dsc curve after being annealed in an ultra - high vacuum ( uhv ) chamber. in addition, the composition of the silicon - based tini film was analyzed by an energy dispersive x - ray spectroscopy ( eds ), and the ti content in the film is approximately 51at %
按照改進的工藝參數,在單晶硅襯底上濺射-淀積了tini薄膜,並進行了超高真空退火, dsc法測得其馬氏體逆相變峰值溫度為72 ,利用能譜分析( eds )技術測得其ti含量約為51at ,通過對非晶tini薄膜與單晶硅襯底之間的界面進行eds及x射線衍射( xrd )分析,發現在用大功率( 2000w )直流磁控濺射法制備tini薄膜過程中,存在ti 、 ni與si的雙向擴散,發生了界面反應,並有三元化合物ni _ 3ti _ 2si生成。Studies show that, in a binary system, huge energy is released when matter of companion star fall onto the surface of neutron star. on the contrary, when matter falls into black hole, it together with the energy generated will disappear behind the event horizon. for that reason, x rays emitted by neutron star binaries are stronger and their spectra exhibit special characteristics
研究發現,在雙星系統中,伴星的物質掉落中子星的表面時會釋放巨大能量,而物質掉落黑洞時,則會與它所擁有能量一同消失於視界之中因此含有中子星的雙星系統所發出的x射線強度總是較高,而光譜也有不同的特徵。The obtained thin films were characterized by x - ray diffraction ( xrd ) - 2 scan. sem and edx were used for the films " morphology and compositional analysis. the temperature dependence of the resistance was measured by the standard four - probe technique
運用x射線衍射的- 2掃描對薄膜的相組成進行了分析;採用sem和edx分別對薄膜的表面形貌和成分組成進行了分析;採用標準的四引線法測量了超導薄膜的臨界轉變溫度。Medical electrical equipment - particular requirements for safety - particular requirements for the safety of x - ray equipment for interventional procedures - part 2 - 43 : particular requirements for the safety of x - ray equipment for interventional procedures
醫用電氣設備.安全性特殊要求.介入過程用x射線設備安全專用要求x射線設備界入過程特殊安全要求.第2 - 43部分:介入過程用x射線設備安全專用要求The formation of self - assembled interfacial n - dodecanethiol monolayer and its effect on the corrosion protection of epoxy coating were evaluated using the x - ray photoelectronic spectroscopy, electrochemical impedance spectroscopy, impedance - time transition, and phase angle - time transition method
採用x射線光電子能譜、電化學阻抗譜、阻抗時間譜和相位角時間譜等方法對硫醇自組裝界面層及其對塗層腐蝕防護性能的影響進行了研究。分享友人