物理及天文學 的英文怎麼說
中文拼音 [wùlǐjítiānwénxué]
物理及天文學
英文
physics and astronomy- 物 : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
- 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...
- 及 : Ⅰ動詞1 (達到) reach; come up to 2 (夠得上; 比得上) can compare with; be comparable; be up to ...
- 文 : Ⅰ名詞1 (字) character; script; writing 2 (文字) language 3 (文章) literary composition; wri...
- 學 : Ⅰ動詞1 (學習) study; learn 2 (模仿) imitate; mimic Ⅱ名詞1 (學問) learning; knowledge 2 (學...
- 物理 : 1. (事物的內在規律) innate laws of things2. (物理學) physics
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Physics and astronomy are cognate science.
物理學及天文學為同性質的科學。The branch of mathematics known as integral and differential calculus serves as a natural and powerful tool for attacking a variety of problems that arise in physics, astronomy, engineering, chemistry, geology, biology, and other fields including, rather recently, some of the social sciences
以微積分而著稱的這一數學分支,作為一個自然的強有力的工具解決物理、文、工程、化學、天地質、生物以及包括較為近期的某些社會科學等領域出現的各種問題。Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced
混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗,以及許多微波測量系統中至關重要的部件。在現代通信系統中,毫米波頻段通常採用超外差接收機,混頻器作為第一級就成為關鍵部件。由於在毫米波頻段,同頻段高性能的本振源成本高,技術難度大,採用分諧波混頻技術是解決此問題的有效途徑,只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。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The field of traditional chinese science is constituted of mathematics, mathematical harmonics, geomantics and physical studies, medicine and pharmacology, astronomy and astrology, and alchemy ; traditional technologies include agriculture, spinning and weaving, mining and metallurgy, civil engineering, paper and printing, ceramics and porcelain as well as a number of other production sectors
研究領域包括傳統的中國古代科學領域如數學音律學卜筮和物理研究中醫藥學天文和星占學煉金術等傳統技術領域如農學紡織采礦和冶金公共工程造紙印刷陶瓷製作等等,以及大量其它的生產工藝。We present a calculation program in this paper, based on the physical optical theory ( po ) theary to predict bse and bses for a conical type of radome. the po theory is used to determine the ficticius currents electrical and magnetic on the inner face of the radome, which is illuminated directly by the radar antenna, and then use the transmission matrix mothod to determine the outer surface ficticion currents, the radiated from the antenna through radome is considered as the radiation field of these ficticion current
本文提出了一種基於物理光學理論預測正圓錐天線罩瞄準誤差及瞄準誤差斜率的計算程序。首先,雷達天線照射到天線罩內壁,應用物理光學法求出內壁等效的電流和磁流,其次,根據傳輸矩陣理論求出外壁等效電流和磁流,天線通過天線罩的遠區場即可認為是外壁等效電、磁流產生的場。Gamma - ray observations help astronomers understand the basic physics of these sources by measuring the energy and variability of the highest energy radiation coming from these sources, radiation often comes directly from the central engine
通過對這些輻射源的高能輻射變化及能量的測量,射線的觀察有助於天文學家了解這些通常直接來自能量中心的輻射源的基本物理性質。Introduction to astronomy provides a quantitative introduction to physics of the solar system, stars, interstellar medium, the galaxy, and universe, as determined from a variety of astronomical observations and models
天文學導論這門課提供了對太陽系、恆星、星際介質、星系及宇宙等的物理入門。這些都建立在各種的天文觀測及模型的基礎下。Abstract : compared with soil destroyed pattern of vertical force and its controlled factor of bearing capacity, it is concluded that pile capacity and its tip resistence have some difference when soil with the same physical mecanic property is used as natural foundation and pile tip resistent layer. whereas the middle weathering rod stratum hasn ' t this property, that is to say it has the same bearing capacity and pile tip resistence
文摘:通過豎向荷載下土(巖)體的破壞模式及其承載能力控制因素的比較,論述了物理力學性能相同的土層作為淺基礎的天然地基與樁端持力層時,承載力值與樁端阻力值應存在一定的差異;而中(微)風化程度的同一巖層作為天然地基與樁端持力層時,不具有這方面的差異性,承載力值與樁端阻力值應該相等。The weather analysis and climatic characteristics of the heavy - hard rainfall in this area, structure characteristics during the rainstorm, the mechanism and structure of mesoscale systems bringing rainstorm and etc. are studied by conducting diagnostic analysis, theory of dynamics and numerical simulation. the influence on the rainstorm causing by mesosc ale topography piling on the plateau, the particular valley topography in northeast plateau and complex surface vegetation are researched by numerical experiments
本論文試圖採用診斷方法、診斷和天氣動力學理論相結合的方法、數值模擬等方法對高原地區大到暴雨的天氣、氣候特徵,暴雨產生時的物理量場特徵、產生暴雨的中尺度系統的發生機理和結構特徵等方面進行研究,對疊加在高原上的中尺度地形、高原東北部特殊的外流河谷地形及復雜下墊面性質對暴雨的可能影響進行數值試驗,以揭示高原暴雨發生發展的物理機制。Point diffraction interferometer - a physical idea, is invented by smartt and strong in 1972, advanced by smartt and steel, and used to test astronomical telescope, it has simple structure and has not special demand to source. recently. with the development of fiber ' s manufacture and coupling technology. the simple modern fiber ' s center is smaller than before, this make it possible to progress fiber point diffraction interferometer ( pdi ), in addition to test convergent wavefront, it can test the reflective concave. the excellence of pdi is that it does not need standard mirror. in intereference testing, the standard mirror is the main reason which limit the improvement of precision, pdi can avoid difficulty to provide the wide future for high precision testing. pdi, which produce the standard sphere wavefront, is an instrument which realize the phase shifting with piezoelectric transducer ( pzt ), and collect the interferogram with ccd, in this paper, a adjusting methord is described, then data processing is obtained
點衍射干涉儀這一物理思想,早在1972年smartt和strong就已發明,由smartt和steel做了進一步發展,並成功的用於檢測天文望遠鏡,它結構簡單,對光源沒有特殊要求,近年來,由於光纖製造工藝以及耦合技術的發展,單模光纖纖芯不斷縮小,為光纖點衍射干涉儀得以發展提供了前提條件,該干涉儀由激光照明,除了檢測會聚波前外,還可以用來檢測反射凹球面,進而應用到單個面形的檢測;另外,光纖點衍射干涉儀最大的優點是不需要標準鏡,在干涉檢測中,標準鏡是檢測精度受限的很大原因,光纖點衍射干涉儀能繞開這一難度,為進行高精度的光學檢測提供了廣闊的前景。By showing the modern technique, such as bioengineering technology, electronic technology, space technology and so on, used and bringing about a series of changes to teh field of agriculture in our country, the article indicates the huge affection of the science and technology on the agriculture polia. having analysed the straits the science adn technology in our used agriculture and about the trends and ways of future development of agriculture policues, author puts forword some wiews following as : modernizting our agriculture, we must select the way of technuqe intensive ; our agriculture product must depend on the increse of producer ' s quality and the modern science and technology ; only by modern science and technology to reform traditional agriculture can we in the end realize agriculture modernization, so we must vigorously develop modern agriculture including the ecological agriculture taken as aim, the physical agriculture and biochemicl agriculture as means
本文通過展示生物工程技術、電子技術、航天技術等高科學技術在我國農業上的應用及其帶來一系列變化,揭示出科學技術在農業政策制定中的重大作用與深刻影響,分析了當前中國農業科學技術應用中面臨的困境及未來農業政策的方向和道路,提出了如下幾個觀點:要實現我國農業現代化,必須走技術集約的道路;我國農業生產必須轉移到依靠勞動者素質的提高和當代科學技術的基礎上來;我國的農業現代化最終只有通過高科技改造傳統農業才能實現,為此,必須大力發展以生態農業為目標、以物理農業和生化農業為手段的現代農業。Jin, a fellow at jila ( a collaboration between the national institute of standards and technology and the university of colorado at boulder ), has pushed potassium atoms into behaving strangely
金是實驗天文物理學聯合學院( jila ,美國國家標準與技術局及科羅拉多大學波爾德分校合設的單位)的研究員,她設法迫使鉀原子表現出奇怪的行為。The opening ceremony of the third joint meeting of chinese physicists worldwide was held today on the cuhk campus. mrs fanny law, secretary for education and manpower of the government of the hong kong special administrative region, officiated at the opening ceremony, together with professor arthur k c li, vice - chancellor of the chinese university of hong kong, dr c y wong, chair of the overseas chinese physics association, professor n p chang and professor kenneth young, co - chairs of the international organizing committee, and professor lai hon - ming, chair of the local organizing committee
第三屆全球華人物理學大會開幕典禮於今天在中大校園舉行,出席的主禮嘉賓是香港特別行政區政府教育統籌局局長羅范椒芬女士,其他主禮人有香港中文大學校長李國章教授、華人物理學會會長黃卓然博士、全球華人物理學大會國際籌委會主席章義朋教授及楊綱凱教授,以及本地籌委會主席賴漢明教授。This paper includes : on the basis of ty160c bulldozer made in tianjin construction machinery works, completing the design and intensity verifying of dgsy - 25 pipe crane ; using high - grade 3 - dimensional plotting software ug ( unigraphics ) to sculpt ; using adams ( automatic dynamic analysis of mechanical systems ) to establish virtual prototyping model and do dynamic simulation, and verifying the feasibility of this design precept and provide the basis for trial - manufacture of physical prototyping. at the same time, still simulating all kinds of danger operating mode in the course of production, which provides the theoretical foundation for rationally selecting ballast type to prevent the occurrence of overturn accidents
本文在天津建築機械廠生產的ty160c推土機的基礎上,完成了dgsy - 25型吊管機的改裝設計及強度校核;使用三維實體建模軟體ug建立了模型;使用機械繫統運動學/動力學模擬軟體adams建立了液壓? ?機械一體化的虛擬樣機模型,並進行了動力學模擬,驗證了設計方案的可行性及結構設計的正確性,為物理樣機的製造提供了參數依據;對生產作業過程中的各種危險工況進行了模擬分析,為科學地選用配重類型以防止傾覆事故的發生提供了理論依據。( 2 ) in stability safety analysis the physical and mechanical parameter of the filling materials should adopt the index in natural condition, but after consolidation should adopt the composite physical and mechanical index which is gained with weight method according to the practical dimension of the stone columns and the earth between the stone columns
認為樁間土的各項物理力學指標採用天然強度,而處理后復合土體綜合強度指標,採用樁體及樁間四川人學f _程碩卜學位論文1幾兩種材料lfu積比法加權值。It will house researchers from fields as diverse as neutrino astronomy, cosmology, seismology and atmospheric physics
科考站將迎接來自各個領域的研究人員,研究領域涉及:微中子天文學、宇宙學、地震學和大氣物理學。Renowned physicists, authors of astronomy textbooks and prominent popularizers of science have made incorrect, misleading or easily misinterpreted statements about the expansion of the universe
有聲望的物理學家、天文學課本的作者,以及著名的科普專家,都曾對宇宙的膨脹做出不正確、誤導的,或是容易遭到錯誤解讀的陳述。In the domain of astronomy and physics, there have been many more miraculous theories similar to superstring. the new star in recent years is dark energy
在天文學及物理學的范疇,跟超弦的超玄性質相似的還有不少例子,暗黑能量就是近幾年的新主角。In addition, a number of courses, e. g., astronomy, relativity, astrophysics, computer simulation, solid state physics, plasma physics, laser physics, photonics, electronics, instrumentation, materials characterization, nanoscience, physics project and graduate courses, etc., are available for the students to choose as electives in order to fulfill their major requirements and to satisfy their own interests
除核心及組別科目之外,本系還設有天文學、相對論、天體物理、電算模擬、固態物理、等離子體物理、光子學、激光物理、電子學、儀器學、材料測試、納米科學、物理專題、及研究院等科目供同學選修。分享友人