放射理論 的英文怎麼說

中文拼音 [fàngshèlǐlún]
放射理論 英文
emission theory
  • 放 : releaseset freelet go
  • 射 : 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） ...
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 論 : 論名詞（記錄孔子及其門徒的言行的「論語」） the analects of confucius
  • 放射 : radiate; emit; blas; radiation; emission; shooting; shedding; abjection; emanation; effluence
  • 理論 : theory
  1. Because of its extensive application and underdeveloped research level in our country, this paper establish the numerical model of blank cartridge ejecting device, the whole process from blank cartridge burning to eject missile is analyzed by classic interior ballistic theory and gas dynamics. several simulation examples are given, and the effect of different parameter structure on ejecting device is discussed

    鑒于這類系統在我國的廣泛應用與相對滯后的研究水平，本文針對三種類型五種型號的掛彈鉤建立了拋放彈彈射機構的數學物理計算模型，用經典內彈道和氣體動力學理論分析了火藥彈燃燒到彈射活塞完全推離懸掛物的整個過程。
  2. Ernest rutherford and frederick soddy were working out the nature of radioactivity

    是盧琴福和索迪揭示了放射性的奧秘，發表了元素的嬗變理論。
  3. Test results show that under 2 - tone test in 5mhz tone spacing, the power amplifier system achieves - 50dbc imd3 with 20w output power, improved 20db in imd3 compared with the one without linearity. estimated value of aclr comes to 53db, which satisfies the 3gpp requirement for wcdma base - station transistor. further tests with alterative input power indicate a steady suppression to the imd3 controlled by the adaptive system

    測試結果表明，自適應前饋功放系統在雙音輸出功率20w時三階交調系數小於- 50dbc ，鄰通道泄漏抑制比（ aclr ）的估算結果大於53db ，在理論上滿足3gpp對wcdma基站發射機的指標要求。
  4. The amplified spontaneous emission ( ase ) is studied. both the forward and backward ase is simulated and their characters are analyzed in detail. then the dual stage cascade structure is presented as a solution to reduce the ase noise

    2 .研究了edfa中放大的自發輻射噪聲光（ ase ） ，詳細分析了前後向ase噪聲光的性質，在此基礎上，提出了雙段級聯結構抑制ase噪聲光，並對這種方法進行了理論和實驗研究。
  5. Do some necessary calculations and decide on the general scheme of compton back - scattering imaging scanner to the real wall inspection. include the selection of radioactive source, the calculation of compton back - scattering beam, the calculation of the basic condition of finding out the different materials and the determination of some important parameters as well. 3

    其主要內容包括入射源的選擇，散射粒子的理論計算，發現異物的最低條件計算以及系統的一些重要參數的確定，主要包括：放射源的選擇，散射角的確定，后準直器的形狀與尺寸，前準直器的尺寸，前準直孔的大小，檢測器的種類與型號，檢測器的效率等。
  6. Through the theory of light radiation and intensity, we can use the fewest leds to satisfy the luminous intensity demand. through image segmentation theory, we can accurately pick module up from the test stripe when it is put in wrong directions. through image processing theory, we can acquire correct information and avoid the bad effects from the asymmetric chemistry reaction and instability of the devices

    用光的輻射和強度理論，我們計算出了獲得足夠圖像強度所需的最少光源;用圖像分割理論，我們在試紙條傾斜放置或有垂直方向上的偏移時，準確地提取出了各模塊的數據;用平滑濾波和均值濾波理論，我們濾除了由於反應不均勻及硬體設備不穩定帶來的噪聲;用交遇區設計線性分類器的方法，我們降低了有限樣本設計線性分類器帶來的誤差，提高了檢驗準確度。
  7. Feedforward is generally known as the best performing linearization technique for its advantages, such as broadband, stability, etc. this paper introduces the theories of power amplifier nonlinear characters and feedforward technique. according to the rf specifications in 3gpp for wcdma transmitter power amplifier, an adaptive feedforward amplifier system is completed including eda simulation, circuits layout and main mechanical structure design

    本文根據3gpp對wcdma發射機功率放大器的射頻指標要求，在對功率放大器的非線性特性和前饋技術的特性進行詳細理論分析的基礎上，結合eda模擬工具，設計了基於自適應前饋的功放系統，並完成了系統的調試和測試。
  8. The ancestors of modern man moved into and across europe, ousting the neanderthals, faster than previously thought, a new analysis of radiocarbon data shows

    用放射性碳測定年代的一項最新數據顯示，現代人祖先進入歐洲並逐漸取代尼安德特人的過程要比傳統理論認為的更快。
  9. Rather than taking some 7, 000 years to colonize europe from africa, the reinterpreted data shows the process may only have taken 5, 000 years, scientist paul mellars from cambridge university said in the science journal nature on wednesday. " the same chronological pattern points to a substantially shorter period of chronological and demographic overlap between the earliest. modern humans and the last survivors of the preceding neanderthal populations, " he wrote

    據路透社2月23日報道，來自劍橋大學的科學家保羅米拉斯在最新一期的英國自然雜志上指出，用放射性碳測定年代的一項最新數據表明，人類祖先從非洲進入歐洲后，僅花費了5000年的時間就取代了歐洲早期居民尼安德特人，而不是傳統的理論所認為7000年。
  10. A survey of literature shows that little study has been done on uptake of pollutants by plants from the polygonaceae, and that the reports about their physiological and biochemical characteristics under heavy metal stress were sporadically seen. a batch of sand culture and soil culture experiments were carried out to investigate heavy metal and radiocesium uptak e and accumulation by rumex acetosa linn, polygonum microcephalum d. don, and rumex hastatus d. don widely distributed on copper mining areas, and their physiological and biochemical characteristics under cu zn stress, as well their potentials in application to phytoremediation

    本論文以廣泛生長于銅礦區的蓼科植物酸模、小頭蓼和戟葉酸模為試驗材料，運用砂培、土培等方法，研究它們對重金屬（ cu 、 zn ）以及放射性核素（ ~ （ 134 ） cs ）的吸收和積累特性以及cu 、 zn脅迫條件下它們的生理生化特徵，初步探討它們在無機污染物污染土壤植物修復中的應用潛力。
  11. Aimed at the helium damages in plutonium caused by a decay, he + ions were implanted in aluminum and the behaviors of helium in aluminum were investigated both theoretically and experimentally to simulate those effects in plutonium. at the same time, the diffusion of helium - 3 produced by tritium decay in stainless steels, which were served as the structural materials in tritium and fusion technologies, was also investigated in this thesis

    針對放射性元素鈈的衰變引起的氦損傷問題，選擇模擬材料鋁進行了he的離子注入和其中氦行為的理論和實驗研究，同時，也研究了氚工藝及聚變堆技術結構材料不銹鋼中氚衰變~ 3he的擴散行為，從而對兩種金屬中he的行為有了較深入的認識。
  12. The basic principle, main properties, typical parameters, technical characteristics and general situation of klystron are introduced. the electron beam prebunching in the modulated cavity and shift tube of relativistic klystron amplifer ( rka ) is studied analytically, a self - consistent equation of radiation generated by the prebunched electron beam in the radiation cavity is derived using the field method of particle ? wave interaction instead of the electrical circuit method, and in terms of it, the gain in the linear regime calculated, a field analysis method is proposed. the theory analysis shows that the characteristic parameters, such as resonance frequency, real part of gap - impedance, external quality fadtor in all kinds of klystron output circuits including single - beam, multi - beam, single - gap, multi - gap, single - beammulti - gap, multi - beam multi - gap klystron output circuit, can be calculated by the field analysis method

    本文系統的介紹了速調管的工作原理、主要特點、發展概況、主要性能指標和技術特點，解析的研究了電子束在相對論速調管放大器的調制腔和漂移管中的預群聚;用粒子波互作用的場方法導出了在輻射腔中預群聚電子束產生輻射的自洽方程，同時對線性區的增益進行了計算。理論分析表明，場分析法可用於計算單注單間隙、多注多間隙、單注多間隙和多注多間隙速調管輸出迴路的諧振頻率、間隙阻抗實部和外觀品質因數等特性參數。
  13. By analyzing and comparing the network feature index - non - beeline coefficient. shortcut index. joint degree index, demonstrates the cobweb theory that in the conditions which has the same area. scale and density, round - radiation network has the best traffic efficiency

    基於對路網特性指標? ?非直線性系數、快捷性指數、連接度指數分析比較的基礎上，提出並論證了在同等的路網覆蓋面積、規模和密度的條件下，環形放射式路網具有最優的交通效率的蛛網理論。
  14. Choosing the 1 # hydraulic lp system of casting and rolling in zhujiang steel l. t. d as the researching object, the paper provides the method of appropriately dealing with initial data and judging the acute wear of equipment by using pls arithmetic which is fit for the condition of fewer samples and more variables

    論文以珠江鋼鐵公司連鑄連軋生產線上1 #液壓lp系統為一研究對象，對原始放射光譜數據進行適當的預處理，運用適合於少樣本多相關變量回歸分析的偏最小二乘演算法，判斷設備是否存在劇烈磨損。
  15. The basic principles and the key techniques of the tps ( treatment planning system ) are highly detailed and discussed in this paper ; these points relative to the computer visualization are emphatically outlined

    本文從計算機可視化技術的角度，詳細論述了放射治療計劃系統（ tps ）的基本原理、實現過程及其中的關鍵技術。
  16. Theoretical analysis and experimental results showed that the high emissivity coating speeds up the heat - absorption and heat release process, strengthens heat transfer by radiation and heat conduction in the regenerator, improves heat transfer efficiency and the blast temperature

    理論分析和實驗結果表明，熱風爐蓄熱體表面高發射率塗層可以提高蓄熱體的蓄熱和放熱能力，強化爐內輻射傳熱和蓄熱體的導熱，從而提高熱風溫度。
  17. The numerical method based on the coupling of the finite difference method in time domain with the discrete fast fourier transform is applied to calculate the first four eigenfrequencies and eigenfunctions of the six - cavity with open boundary. the absorbing boundary condition for tem wave is tested numerically, and it is applied to writing the code. the cold testing of the cavity is done and the results are good agreement with the numerical results

    計算x波段六腔開放腔前四個模式的場分佈;根據第二章公式分別計算x波段六腔開放腔前四個模式的電子負載電導並總結了這四種工作模式渡越效應的規律，基於這種小信號理論分析了x波段渡越輻射振蕩器，得到了工作模式及可能產生的模式競爭。
  18. Based on the discussion on the principle of density - logging, this paper analyses far - gamma gamma rate, near - gamma gamma rate and density - logging curve respectively, and discusses far - gamma gamma rate near - gamma gamma rate and density variation caused by radioactive anomalies, and preliminarily interprets factors that could lead to the variation of density - logging curve of radioactive anomalous layer, thus explaining the reason why density - logging curve changes at the radioactive ore - layer in northern ordos basin, finally, an empirical formula for revising the distortion of density - logging curve has been established

    摘要本文概述了密度測井原理，分別對長源距計數率、短源距計數率及密度曲線進行分析，對由於放射性異常引起的長源距計數率、短源距計數率及密度變化情況進行了討論，初步解釋了放射性異常層位密度曲線的變化因素，說明了鄂爾多斯盆地北部地區密度測井曲線在放射性礦段的變化原因。
  19. The mathematical relationship of breakdown voltage of gas discharge in co2 laser excited by rf is derived by using reduced model based on the theory of gas discharge and several physical parameters which influence gas discharge breakdown of laser are pointed out

    摘要以氣體放電理論為基礎，利用簡化模型推導出射頻激勵co2激光器氣體放電擊穿電壓的數學關系式，指出影響激光氣體放電擊穿的幾個物理參量。
  20. The main purpose of this article - is to simulate the whole process of the generation and transportation of the vapor phase particles of the film in rf magnetron sputtering, which contains transportation of ions in rf glow discharge, sputtering of target and transportation of sputtered atoms, via models that are established on the basis of the physics of sheath theory for the rf magnetron glow discharge, sputtering theory and transportation theory

    本論文對射頻磁控濺射中入射離子的產生和輸運、離子對靶材的濺射、濺射原子的輸運過程進行了綜合考慮，根據射頻輝光放電的陰極殼層理論、粒子的輸運理論、離子對靶材的濺射理論建立模型，進行了計算機模擬。
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