演化周期 的英文怎麼說
中文拼音 [yǎnhuàzhōuqī]
演化周期
英文
cyclic evolution-
Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground
針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。The ways of study are followed : insp - ecting and observing their living condition on the open fields ; cultivating sp - rout, examining physiological and biochemical changes in plants ; paraffin sec - tioning. the study results show : due to the species diversity, though the sproutsof xerophyte have several strategies to adapt to environmental drought in the long term evolution process, they have obtained same adapting mechanism to the short of water
研究結果表明：由於物種多樣性，在長期的適應演化過程中，旱生殖物幼苗對惡劣生境的適應方式多種多樣，但其對水分條件的適應機理卻是一致的。與生命周期短暫的短命植物不同，多年生旱生植物的當年生幼苗，當面臨水分脅迫時，其結構和生理功能具有迅速改組與完善的特徵。Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented
許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太陽）具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太陽中其流線，即處于對流層的薄的剪切流層在太陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太陽黑子周期.本文也給出了一個新的非線性三維太陽發電機模型We had observed more than ten selected asteroids using 1 - meter telescope in yunnan observatory during 2000 to 2002. the observational data of seven asteroids had been reduced and analyzed. we have derived their synodic periods and estimated the shape and orientation of rotational axis for one asteroid
為此，我選定了一些直徑在125公里左右的小行星進行觀測和分析；一方面，測定它們的自轉周期，進行「角動量衰減」現象的研究，另一方面，對小行星形狀和自轉軸指向進行估算，為小行星碰撞演化研究提供更為有利的證據。It has been shown that : with the increase of the kerr medium intensity parameter u, the rabi oscillation extent of the mean photon number decrease and the rabi oscillation frequency becomes rapid, the antibunching effect becomes strengthened ; with the increase of n, the interaction between the field and atoms gradually becomes weak, however, the interaction between the field and the kerr medium gradually becomes strengthened and happen in advance ; with the increase of the coupling constants of two atoms, the rabi oscillation extent of the mean photon number decrease and the rabi oscillation frequency becomes rapid too, the antibunching effect becomes weak
結果表明：隨著值的增加，光子統計演化曲線的rabi振蕩的幅度減小，振蕩頻率變快，系統的反聚束效應增強；隨著初始場強（ ? ）的增大，場與原子的相互作用逐漸減弱，而與介質的相互作用逐漸加強並提前發生。隨著原子間耦合系數g的增大，光子統計演化曲線的rabi振蕩的幅度減小且振蕩周期縮短，同時，系統的反聚束效應減弱。Some conclusions are listed as follows : the plateform cover cap of ordos basin and its circumference areas can be divided into five tectonic sequences. the tectonic evolution of ordos basin can be classified in six stages : the basement formation phase ( from archeozoic to paleoproterozoic ) ; the aulacogen phase ( from mesoproterozoic to neoproterozoic ) ; the north china continental sea phase ( from sinian to early - paleozoic ) ; the north china intracratonic depression phase ( from late - paleozoic to early mesozoic ) ; large ordos inland basin phase and the formation of independent ordos basin ( mid - late mesozoic ) ; fault basin phase around the ordos basin ( cenozoic )
通過研究有以下成果及認識：鄂爾多斯盆地及其周緣地區沉積蓋層可劃分為五大構造層序，盆地的形成和演化分為六大構造階段：太古代至古元古代基底形成階段、中新元古代克拉通內裂陷槽或坳拉槽演化階段、震旦紀?早古生代華北陸表海盆演化階段、晚古生代?早中生代華北克拉通坳陷演化階段、中生代中晚期大鄂爾多斯內陸盆地演化階段及獨立鄂爾多斯盆地的形成、新生代周緣斷陷盆地演化階段。We investigate finer time scale statistical properties of this traffic, including burstiness, periodicity, and synchronization. utilizing the data gathered by our simulator, we compared the results with our prediction, after that, we investigated the root cause of a specific networking traffic pattern, under various network configuration and policies. the importance of our work is not only analyzing the cause of each traffic pattern, but also providing a beneficial formal method for future research
在實驗結果的分析過程中，我們根據當前流行的網路拓撲建立了模擬路由試驗環境，特別針對lsa的突發性、周期性和同步流量的時域特徵進行了觀察，不僅探究了三種重要lsa流量的發生機理以及這些流量的變化對整體路由效率的影響，比對了我們的預測與最終的實驗結果，深入研究了統計圖表裡各種異常情況的成因和路由協議採用不同演算法和策略以後對整體路由環境的影響。The relation between stellar chromospheric activity and rotation of evolution stars have a good relativity. but meticulous analysis show chromospheric activity of evolution stars depend on stellar spectral type and effective temperature strongly. we provide several possible explain for those phenomena
但是細致分析顯示演化恆星色球活動水平隨恆星自轉周期間的分佈對恆星光譜型和恆星表面有效溫度有很強的依賴，並對這些現象提出了幾種可能的解釋。Though this departure is not obvious, the result still support the conclusion in the analysis of stellar chromospheric activity. for evolution stars, wo do n ' t, obtain significative result because the deficient samples. but the statistics analysis show the distrbution of corona activity of late type with color index and rotation period exist upper limit
演化恆星的磁冕球活動在色指數和自轉周期的分佈上都顯示出冕球磁活動存在上限的現象，並且對冕球磁活動上限的擬合表明在色指數b一v為1 . 0附近和自轉周期It has been detailedly studied about three - dimensional shape and internal structure of deposital system in the continental basin. but lacking of high - resolutional study on confirming age according to the genetic unit, and also lacking of quantificationally study on evolutive periodicity and velocity of deposital system and its internal structural unit
在陸相油田沉積學研究中，人們對陸相油田地下沉積體系的三維形態描述和內部構成特徵的研究已較為深入，而缺乏對以成因相為單元進行高精度定年研究，更缺乏對沉積體系及內部構成單元演化周期及演化速率的定量研究。The basin - formed mechanism, evolution model and petroliferous geological features of compresso - shear basins in the world are analyzed, by which six aspects of the features are summarized as follows : 1 ) in the compresso - shear process, the sedimentary speed of basin is high, forming thicker coarse - grained clastic rocks which normally shape good petroleum reservoir ; 2 ) the source rocks of basin tend to coming from the organic matter - enriched rocks formed in pre - compresso - shear stages, except that in intense compresso - shear process, deep water - semi deep water source rocks are possibly developed in pre - compresso - shear stages, e4xcept that in intense compresso - shear process, deep water - semi deep water source rocks are possibly developed in frontal of deep depression ( fore deep ) of thrust belt ; 3 ) the en echelon folds ( including anticline and fault - nose structure ) are generally as good oil traps ; 4 ) the compresso - shear process is helpful to hydrocarbon accumulation ; 5 ) it may promote the maturity and hydrocarbon - generating process of organic matte, and 6 ) the thrust belts in the surrounding areas of compresso - shear basin are favorable are favorable domains for petroleum concentration
摘要通過對世界上壓扭性盆地的成盆機制、演化模式和油氣地質特點分析，總結壓扭性盆地具有6個方面的石油地質特徵：壓扭作用期間盆地的沉積速率較高，一般形成較厚的粗碎屑沉積，它們常構成很好的油氣儲集層：盆地的烴源巖往住來自於前壓扭期砂成的富含有機質的巖石，但在強烈的壓扭作用期間，在沖斷帶的前緣深坳陷（前淵）中有可能發育深水半深水相的烴源巖；壓扭（張扭）作用期間形成的雁行式褶皺（包括背斜和斷鼻等）往住是很好的油氣圈閉；壓扭作用易於成藏；壓扭作用可以促進有機質的成熟生烴作用；壓扭性盆地的周邊沖斷帶是油氣賦存的有利部位。We calculate a model with angular momentum loss caused by gravitational radiation, and find that the binary undergo cyclic evolution as well. however, the period of the cycle becomes shorter, and the ratio of the time spent in the semi - detached phase to the time spent in the contact phase in a cycle becomes smaller
我們計算了由引力波輻射引起雙星系統的角動量損失的演化模型，發現雙星系統還是經歷循環演化，不過循環的周期變短，且雙星系統的每一個循環處在半接狀態的時間與處在相接狀態的時間之比變小。Through changing the interaction time, the degree of entanglement of the atom - cavity field hasa periodic change
隨著時間的演化，原子與光場組成體系的糾纏度呈現出周期性變化規律。The radiation field evolves from a steady saturation state to a limit cycle oscillation state, and eventually to chaotic oscillation state as the current increases, the region in which the field exhibits limit cycle or chaotic oscillation is called the " soft " and " hard " nonlinear regime, respectively : ( 1 ) in the " soft " nonlinear regime, the radiation field is characterized by period doubled bifurcation and the discrete power spectrum
隨著電流的增大，輻射場經歷由穩定飽和到極限環型的周期振蕩，並最終過渡到非周期性混沌振蕩的演化過程，按其狀態可分為「軟」和「硬」兩種非線性區域： （ 1 ）在「軟」非線性區域，場的極限環振蕩態和穩定飽和態是交替出現的，其特徵是典型的倍周期分岔，輸出功率譜是分立的。Finally we also discuss explicit exact solutions of kdv, coupled kdv and a compound kdv - burgers equations etc. wu algebraic elimenation method is most important basic tool during the course of solving proplem
我們還研究了kdv ，耦合kdv方程及一類組合kdv - burgers方程，一類非線性演化方程精確解，這些解包括奇性孤波解，周期解和有理函數解。Although this may be sad from a physical point of view, all nonphysical forces shall retract and carry on, returning to those creations that they are resonant with for their own return cycle ahead
盡管從物質層角度來看這很悲慘，但所有的非物質力量都將撤回而繼續前進，回到它們共振的造物而在前方周期中演化回家。On the base of choosing proper model and designing route, it uses cad and probes into an efficient and easy design way to enhance design efficiency and shorten design periods. it brings in the way of multiple - objective optimization and gives proper optimization model and algorithm to get a comparative satisfying result. and it applies system simulation to cable crane design and gives the simulation model and arithmetic of the freight track
本文針對此問題，引入現代的設計方法：在選取合適的模型和設計路線的前提下，運用計算機輔助設計，研究探討高效便捷的設計方法，大大的提高設計效率，縮短設計周期，節約成本；引入多目標優化的思想，提出合理的優化模型，給出了實現演算法，得到了比較滿意的結果；引入系統模擬的設計理念，給出了荷重軌跡的模擬模型實現演算法和程序，對荷重軌跡進行了計算機模擬，提高了纜索起重機布置的效率和質量，提高了生產的安全性。To optimize milti - period inventory systems, in which quantity discounts are available, demand rates change over time, and checking and replenishments are made periodically, an algorithm was proposed to search control rules
摘要針對供應商提供數量折扣、需求率隨時間變化、周期性檢查並補充庫存的多階段庫存控制策略，提出一種優化演算法。( 2 ) the analysis by characteristic section planes can draw that the ancient climate in deposit period of the characteristic section plane one sediments ( about seventeen thousand years before present ) is warm - dry and has relative humid and dry evolution rule, from fifteen to thirty years as its evolution period, that the ancient climate in deposit period of the characteristic section plane two sediments ( about fourteen thousand years before present ) is humid and has relative alternate very humid and humid evolution rule, from two to fourteen years as its evolution rule
（ 2 ）通過對兩個典型剖面的綜合分析得出，典型剖面沉積物沉積時期（距今約17kab . p . ）的古氣候特徵總體上為暖干，並具有以15 30年為演化周期，相對的濕潤-乾燥-濕潤的演變規律。典型剖面沉積物沉積時期（距今約14kab . p . ）的古氣候總體特徵為濕潤，並具有以2 14年為演變周期，相對的很濕潤-濕潤交替的演化規律。The implying environmental substitute indicators are carbonate carbon and oxygen isotopes and so on. the main conclusions drawn from this paper are as follows : ( 1 ) the ancient climate evolution, from twenty - two thousand to ten thousand years before present, diexi, minjiang river, is from dryness to wetness and can be divided into six phases and two periods by analyzing the ancient barrier lake sediments through multi - environment indicators, and its evolution cycle is three thousand years or so
主要得出以下幾點結論： （ 1 ）通過利用多環境代用指標對岷江疊溪古堰塞湖沉積物的綜合分析得出，岷江疊溪地區距今約22千年至10千年間的古氣候經歷了乾旱濕潤乾旱的演化過程，演變周期大約為3千年，並將其劃分為六階段、兩時期。分享友人