three-level system 中文意思是什麼
three-level system
解釋
三能級系統-
In addition, the country will perfect the three - level ( county, township and village ) agrotechnique popularization network step by step, support the development of various non - governmental special technical organizations, as well as form a service system for popularizing agricultural technologies in which the state, collective and various non - governmental technical organizations will work in coordination
逐步健全縣、鄉、村三級農業技術推廣網路，扶持各類民辦專業技術組織的發展，形成國家、集體和各種民辦技術組織相互配合、相互補充的農業技術推廣服務體系。 -
System safety design controls safety of datum from three aspects, " physics level ", " system level " and " data level "
系統安全設計從「物理層」 、 「系統層」 、 「數據層」三個方面對數據的安全性進行了控制。 -
In this paper we have done two work, one is we, in the dressed states representation, reveal that the constructive interference of atomic coherence on absorption leads to electromagnetically induced absorption, which is in sharp contrast to the case in which destructive interference of atomic coherence gives rise to electromagnetically induced transparency and the other is we reveal that coupling field linewidth inhibits electromagnetically induced absorption, by employing a four - level system in which three transitions are in n configuration and the middle transition serves as a probe transition
本文主要做了兩方面的工作：一是在修飾態表象中揭示修飾態原子相干對吸收的相長干涉產生電磁誘導吸收，這與修飾態原子相干對吸收的相消干涉導致電磁誘導透明的情形形成鮮明的對照。二是在裸態中，引入耦合場的線寬，從而發現耦合場的線寬抑制電磁誘導吸收。首先研究電磁誘導吸收。 -
Quantum interference occurs in a three - level a system with near - degenerate dipole allowed transitions, which are coupled to the same linearly polarized incoherent field
如，當a型的兩個躍遷與一個線性極化的非相干場進行耦合時，非相干泵浦產生量子干涉。 -
The fourth chapter mainly discusses the operation thinking of the three - level managerial system of curriculum in our country, i. e., to seek the balance of centralization and decentralization
第四部分主要探討三級課程管理體制在我國的運行思路，即力求集權與分權的平衡。 -
The characteristic of the three - level managerial system of curriculum centrally reflects in the balance between centralization and decentralization, and national curriculum reflects centralization, local curriculum and school - based curriculum reflect decentralization
我國三級課程管理體制的特點集中體現在集權與分權的平衡，國家課程體現集權的一面，地方課程和學校課程體現分權的一面。 -
The three - level managerial system of curriculum of our country is a new managerial system of curriculum, it is different from previous centralization and decentralization. it is neither the pure centralization nor the pure decentralization, but is the combination of them
我國的三級課程管理體制是一種新型的課程管理體制，它區別于以往的集權制與分權制，既不是單純的集權制，也不是單純的分權制，而是集權與分權相結合的一種課程管理體制。 -
All sorts of imperceptible factors making the system get worse, including the harmonic of the inverter and magnifying of dv / dt over long cable and the effects after applying the inverter. i applied the three - level main circuit structure to the esp system, so that the high voltage problems resulted by low endureing voltage can be solved, at the same time avoided the voltage distributing because of devices in series
為此本文將三電平主電路結構運用到潛油電泵變頻系統中，以解決由於當前器件耐壓較低而要求實現中高壓問題，同時避免了由於器件串聯而引起的均壓問題，具有諧波含量較二電平變頻器要低和體積較低壓單元串聯方式要小等特點。 -
The secretary for health, welfare and food, dr yeoh eng - kiong, said today ( september 23 ) that the government would discuss with the hospital authority ( ha ) the communication of ha s internal response plan for infectious disease outbreak in the setting of the government s overall three - level response system
?生福利及食物局局長楊永強醫生今日（九月二十三日）表示，政府將會與醫院管理局（醫管局）討論其緊急應變機制在傳達資訊時，應如何配合政府整體三級應變系統。 -
In this paper we investigate the dispersive and absorptive properties of a system of three - level cascade atoms driven by a strong coherent field
本文主要研究了由強相干場驅動的三能級級聯系統的吸收色散關系。 -
Compared with three - level atomic system, the atomic coherence effects in four - level can lead to eit and eia, which depend on the intensity of control light and the relaxation of the fourth level
與三能級原子系統相比，四能級原子相干效應即可導致電磁感應透明的產生，也可產生電磁感應吸收現象，取決于控制光的強度和第四個能級衰變率的大小。 -
Entropy evolution properties of the field in the system of the cascade three - level atom interacting with binomial state for radiation field
單模奇相干態光場與耦合雙能級原子相互作用系統的量子場熵演化特性 -
Abstract : we have studied the polarization beats spectroscopy with phase - conjugation geometry in a cascade three - level system. it was found that the accuracy for the energy - level difference measurement is determined by the homogeneous linewidths of the optical transitions. under the condition for the occurrence of beating, the frequency difference of the beat between two independent light sources could exceed the laser linewidth. the measurement accuracy for laser absolute frequency could reach the same order of magnitude as the laser linewidth
文摘:研究了級聯三能級系統中的相位共軛極化拍頻光譜術.發現其對能級差的測量精度決定於光學躍遷的均勻增寬.在符合拍頻條件時，兩獨立光源拍頻的頻差可以超出激光線寬，激光絕對頻率的測量精度可達到與激光線寬同一量級 -
The atomic coherences in four and three level systems are discussed in this thesis : 1 ) atomic coherence effects in four - level n - type atomic system are discussed
為此，我們對此做了一系列深入研究，本文的主體內容有二：第一，研究了n型四能級原子系統中的原子相干效應。 -
In chapter 2, we analyzed the effect of the driving field phase fluctuation on the gain and dispersion and population differences in an open v - type three - level non - inversion lasing system and then discussed the effects of the incoherent pumping rate, the ratio of the atomic injection rates, the atomic exit rate, the rabi frequency of the probe and driving fields and their corresponding detuning on the gain, dispersion and population differences of the system, and got some important conclusions different from those in closed or other open systems
第二章討論了驅動場的相位漲落對開放的v型三能級無反轉激光系統的影響，根據解析解的數值計算結果討論了非相干泵浦速率、粒子注入速率之比、粒子退出速率、探測場和驅動場的rabi頻率和相應失諧對系統增益、色散和粒子數差的影響，得到了一些不同於封閉的v型系統及其他開放的無反轉激光系統的重要結論。 -
Next we consider the effect of the coupling field linewidth to electromagnetically induced absorption, by employing a four - level system in which three transitions are in n configuration and the middle transition serves as a probe transition, we find that coupling field linewidth inhibits electromagnetically induced absorption
碩士學位論文master 』 st } iesis其次，本文研究在裸態下，考慮禍合場線寬對原子相干的作用，進一步揭示了禍合場線寬抑制電磁誘導吸收。這與禍合場線寬增強eit的吸收形成鮮明的對比。 -
The relatively independent financial system for a three - level - government is implemented in germany and the jurisdictions in different government financial organizations are separated by the tax systems
德國實行三級政府相對獨立的財政體制，通過稅收體系的劃分明確各級財政管理機構的管轄權。 -
Quantum beats in ladder three - level - system
梯型三能級系統量子拍頻研究 -
One typical model for cpt is the a type three - level system when the life times of the ground levels are long enough and the coherent driven transitions are on the two - photon resonance
一類典型的系統是電偶極躍遷構成a型的系統，條件是兩低能級壽命很長， a型兩偶極躍遷發生雙光子共振。 -
In chapter 2, we use an open v - type three - level system model with incoherent pump put forward by yelin, and give a universal nonlinear analytical solution of the steady state by density - matrix equations of motion
第二章中我們使用了yelin等提出的具有非相干泵浦的開放v型三能級系統模型，通過密度矩陣運動方程給出了該系統的定態非線性解析解的普遍表達式。
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