自發放射 的英文怎麼說

中文拼音 [zìfāfàngshè]
自發放射 英文
emission, spontaneous
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 發 : 名詞（頭發） hair
  • 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） ...
  • 自發 : spontaneous
  • 放射 : radiate; emit; blas; radiation; emission; shooting; shedding; abjection; emanation; effluence
  1. The results of these early research work showed that rna polymerase iii transcription was localized in the nucleoplasm. however, with the development and the application of new technologies since 1990s, the controversy arose on the transcription sites of rna polymerase iii. in recent years, more and more scientists presumed that rna polymerase iii transcription might not occur in the nucleoplasm but in the nucleoli

    自上個世紀八十年代初期，人們相繼運用細胞化學染色、電鏡放射自顯影等進行研究的結果表明： rna聚合酶的轉錄發生在核質中，但隨著新的研究技術的發展和應用，人們卻發現rna聚合酶的轉錄可能發生在核仁中，從而對早期的研究結果提出了質疑。
  2. Radioactive dating showed the crystals from western australia varied in age from 3. 06billion to 4. 25billion years ， making them almost 1billion years older than the previous oldest - knowndiamonds

    放射性斷代測出來自澳大利亞西部的這種晶體在30 . 6億到42 . 5億年前間發生變化，這比之前已知最古老的鉆石還早10億年左右。
  3. Using radiocarbon techniques on sediments collected from four rivers, they determined that bacteria may alter riverine carbon, making it indistinguishable from ocean carbon

    科學家以放射性碳技術研究收集自四條河流的沉積層，發現細菌可以改變河水裡的碳，使它與海水裡的碳無法區別。
  4. Effect of amplified spontaneous emission in heaven - i pre - amplifier

    天光一號預放大器中的放大自發輻射效應
  5. Amplified spontaneous emission

    放大的自發輻射
  6. However, in the pulse application fields, the output pulse energy from single mode fiber lasers or amplifiers is limited by amplified spontaneous emission ( ase ), nonlinear effect and facet damage

    在脈沖激光應用領域中，這類小芯徑光纖放大器和激光器的輸出脈沖能量受限於自發輻射放大、非線性效應以及光纖的端面損傷。
  7. 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。
  8. In the two - photon resonance case, part of the input pulse energy is transformed into higher and lower frequency components through amplified spontaneous emission and four - wave mixing, and the medium shows strong optical power limiting effect

    在雙光子共振情況下，即入射脈沖頻率等於1 、 3能級之間的共振頻率的一半，由於介質中放大的自發輻射和四波混頻的作用，部分入射脈沖能量轉化為高頻和低頻電場成分的能量，分子介質表現出了很強的光功率限幅特性。
  9. Emitting light, especially emitting self - generated light

    發光的放出光的，尤其是放射自己內部產生的光的
  10. In addition to absorption and spontaneous emission, einstein deduced that a third kind of interaction must exist, one in which a photon could induce an excited atom to emit another photon

    除了吸收與自發放射之外，愛因斯坦推論出必須存在第三種交互作用，也就是光子會誘使受激發的原子放射出另一個光子。
  11. New tracers and their analysis methods, new developments on the interpretation of tracer response and new concepts & methods contributed on tracer methodology. since 1980s, interwell radiotracer test has gained rapid development. the main reasons are radiotracers has the advancetages of high sensitivity, wide selectivity and no chemical contamination on the reservoir

    自上世紀八十年代以來，放射性井間示蹤測試在國際上得到了很大的發展，主要是因為放射性示蹤劑具有種類多、檢測靈敏度高、並且對油藏不產生化學污染等優點。
  12. Electrophysiological experiment : in 73 rats, extracellular recordings in vivo were made from pvn using 3 - barrel microelectrode. neurons were categorized as gastric distension excitatory ( gd - e ) or inhibitory ( gd - i ) neurons tested with gastric distension stimulus. drugs were applied through the 3 - barrel microelectrode by a 4 - programmable pressure injector ( pm2000b, mdi, usa ) : relin, saline ( control group ) relin, " [ d - lys - 3 ] - ghrp - 6 ( antagonist for ghrelin - r ), to observe the effects of drugs on the neuron discharge

    電生理實驗方法：在73隻大鼠中，應用三管玻璃微電極細胞外記錄麻醉大鼠一側pvn神經元自發放電，用水囊充盈胃鑒別胃擴張敏感神經元（ gdsn ） ，以壓力注射儀（ pm2000b ， mdi ， usa ）經三管玻璃微電極，對核團內中文摘要單個神經元分別微量注射給予: ghrelin 、生理鹽水ns （對照） ghrelin 、 d一lys一3 ]一ghrp一6 （ ghrelin受體拮抗劑） ，觀察藥物對神經元單位放電的影響。
  13. Since the magic number 28, which is the first that requires the introduction of a strong spin - orbit interaction belongs to the if2p shell in the nuclear shell model. so the nuclei in the if2p shell have been a research hotspot in nuclear physics. the doubly odd nucleus 64cu which is also in the if2p shell has been the subject of many experimental investigations previously via various type of nuclear reaction such as 64ni ( p, ny ) and its excitation leveles have been already studied to about 8 mev

    放射性核素~ （ 64 ） cu是奇奇核，屬於1f 、 2p殼層，而在原子核殼模型中，第一個需要引入強自旋-軌道藕合才能出現的幻數就在1f 、 2p ? ?殼層，因此if 、 zp殼層一直是核物理領域的研究熱點，近三、四十年來使用了各種不同類型核反應例如『 4ni … ， fly ）等反應，對『 ll激發態性質進行了廣泛的研究，其激發能級已到了smev左右。
  14. Since the pioneer days of the curies, many more radioactive substances have been discovered.

    自居里夫婦的開創性時代以來，已經發現許多其他放射性物質。
  15. Because power management in this thesis aims at amplified spontaneous emission noise of erbium ? oped fiber amplifier ( edfa ), the thesis introduces the simplified stark ? split energy levels of er3 ", amplified working mechanisms of er3 * and working performance of edfa in details

    因為本文所採用的功率管理主要是針對edfa摻餌光纖放大器所產生的自發輻射噪聲去採取均衡措施，所以論文中詳細介紹了edfa中鉺離子的stark分裂的簡化的能級模型、鉺離子的放大工作機理及edfa的工作特性。
  16. Wonderful time health club features a vast array of entertainmentfacilities, including gym, sauna bath, indoor swimming pool, snooker, chess, barbers shop, and av rest hall. you can also relax yourself and enjoy the tea culture in the tea shop

    設有設施全的健身房桑拿浴游泳池臺球棋牌美容美發鐳射休息廳等設施。盡可使您放鬆自我恢復活力。
  17. Study of raman scattering of plastic optical fiber

    光纖中放大的背向自發拉曼散射的增益特性
  18. Furthermore, the fiber phase - conjugator has been used in ld - pumped solid - state laser system with four - pass configuration to suppress the self - oscillating ( so ) phenomena caused by amplified spontaneous emitting ( ase ) in laser amplifier. when using 200 m fiber, the energy of so has been successfully decreased from 12mj to below the precision of energy - detector

    將光纖相位共軛鏡應用於四通放大結構中，有效抑制了放大級中的放大自發輻射引起的自激振蕩現象，使得自激振蕩輸出能量從12mj降低到能量計最小精度以下。
  19. In succession, the theory of chirped - pulse amplifier system is given in detail, firstly, studying from designing experimental light road and optical components to theoretical analysis, we par ' tly finished the system by ourselves. about ultr a - shoft pulse with a pulse - width of 9. 8f s and output power of 650mw and band - width of about l 20nm is output from oscillator source, secondiy, the stretching capacity of single grating four - pass stretcher is measured using abcd matrix combining collins function, and the effect of relativ e parameters to the streching ratio is also simulated. thirdly, a new type of disjunctional frequency moduiating function is provided according to the gain - narrowing and gain - saturation which are appeared in the co urse of amplification, under modulating the two effects are both controlled on some e xtent, fourthiy, the effect of ase that is often ignored by people is analyzed and the resolving methods are also given

    從光路、光學元件的自行設計到理論分析計算，初步建立了一臺實驗系統；採用abcd矩陣法結合collins公式計算了四通式單光柵展寬器的展寬量，並模擬了相關參數對展寬比的影響，對實驗具有指導意義；評價了再生放大器和多通放大器的優缺點，對放大過程中通常忽略的放大自發輻射現象（ ase ）進行了分析，並提出了相應的解決方法；針對放大過程中出現的增益窄化和增益飽和現象，對輸入種子脈沖提出了一種新的分段頻率調制函數，實現了對增益窄化效應和增益飽和效應的共同抑制；提出了系統的材料（包括放大介質和光路中的普通介質）正是融合高階色散的來源。
  20. 4. the lpfgs are used in single wavelength er - doped fiber amplifiers ( edfas ) as a spontaneous emission noise ( ase ) filter, and the gain of the edfa is increased by 7db and the noise figure ( nf ) is decreased by 0. 5db, for the first time

    4 、成功研製了摻鉺光纖放大器，首次將高頻co2激光脈沖寫入的長周期光纖光柵應用到摻鉺光纖放大器中作為自發輻射噪聲濾波器，使edfa的增益提高了7db 、噪聲系數降低了0 . 5db 。
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