正星形線 的英文怎麼說
中文拼音 [zhēngxīngxíngxiàn]
正星形線
英文
regular asteroid-
On holiday in malm ?, sweden, photographer stephen kelly, 38, saw more than just the figures painted on the ground to show the pedestrian route. “ i saw an adult leading a child not down the sidewalk, but crossing space with the last of the fall leaves scattered like suns and stars
拍下這張照片的史蒂芬?凱利現年38歲，他在瑞典馬爾摩度假的時候，從漆在地上標示人行路線的圖形中看到了另一番風景： 「我看到一個大人牽著一個孩子，但他們不是走在人行道上，而是正在穿越一個空間，那裡散落著最後的秋葉，像許多太陽和星星。 」One ramification of our calculations is that radio pulsars are neutron stars in which the large - scale dynamo has failed to operate
從我們的計算中，還可以附帶得到一點：無線電波霎正是無法形成大尺度發電機的中子星。This paper deals with the regular curves in a riemannian manifold with constant sectional curvature and the affine starlike curves in r2, r3 and r4
本文研究了具有常截面曲率的黎曼流形中的正則曲線及二、三、四維空間中的仿射星形曲線。For the regular curves, we find two killing fields for the purpose of integrating the structural equations of the p - elastic curves and express the p - elastica by quadratures in a system of cylindrical coordinates. for the star - like affine curves, we solve the euler - lagrange equation by quadratures and reduced the higher order structure equation to a first order linear system by using killing field and the classification of linear lie algebra sl ( 2, r ), sl ( 3, r ) and sl ( 4, r ). we solve the centroaffine p - elastica completely by quadratures
對于正則曲線的情形，我們發現了兩個用於求解p -彈性曲線的結構方程的killing向量場並用積分將p -彈性曲線在一個柱面坐標系中表示出來，而對仿射星形曲線的情形，我們用積分方法解出了歐拉-拉格朗日方程，利用killing向量場及線性李代數s1 （ 2 ， r ） 、 s1 （ 3 ， r ）和s1 （ 4 ， r ）的分類將高階結構方程降為一階線性方程，因此我們用積分完全解出了中心仿射p -彈性曲線。The hurricane blast of stellar winds and blistering ultraviolet radiation within the cavity is now compressing the surrounding walls of cold hydrogen
空穴中星風的擊波和熾熱的紫外線輻射正在壓縮周圍冷氫氣形成的墻。The hurricane blast of stellar winds and blistering ultravioletradiation within the cavity is now compressing the surrounding walls ofcold hydrogen. this is triggering a second stage of new star formation
空穴中星風的擊波和熾熱的紫外線輻射正在壓縮周圍冷氫氣形成的墻。由此觸發了第二階段新恆星的形成。Topics include : planets, planet formation ; stars, the sun, " normal " stars, star formation ; stellar evolution, supernovae, compact objects ( white dwarfs, neutron stars, and black holes ), plusars, binary x - ray sources ; star clusters, globular and open clusters ; interstellar medium, gas, dust, magnetic fields, cosmic rays ; distance ladder ; galaxies, normal and active galaxies, jets ; gravitational lensing ; large scaling structure ; newtonian cosmology, dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis
課程的主題包含了：行星、行星形成；恆星、太陽、正常的恆星、恆星形成；恆星演化、超新星、緻密天體（白矮星、中子星及黑洞） 、波霎、雙x -射線源；星團、球狀及疏散星團；星際介質、氣體、塵埃、磁場、宇宙射線；距離階梯；星系、正常及活躍星系、噴流；重力透鏡；大尺度結構；牛頓宇宙學、宇宙的動力膨脹及溫度發展歷史；宇宙背景微波輻射；大霹靂核合成。The result shows that the solar radiation pressure moments play a mainly part. based on kalman filtering, three kinds of attitude determination algorithms were studied using the attitude sensor now available on the explorer : the first based on digital solar sensor ( dss ) and gyroscope when the star sensor is not available ; another based on dss, high - gain antenna ( hga ) and gyroscope when the explorer is in the earth - safe mode ; the third based on star sensor combined with gyroscope when the explorer is in the normal mode
針對配置了典型測量敏感器的深空探測器，基於擴展kalman濾波給出了其姿態確定的方法:針對星敏感器不可用情形，給出了使用太陽敏感器和速率陀螺定姿的濾波器演算法;針對安全模式下的對地穩定定向情形，給出了太陽敏感器和高增益天線融合速率陀螺信息的定姿演算法;針對正常巡航模式給出星敏感器和速率陀螺聯合定姿演算法。On the contrary, his eyes wet with tears, pierre looked joyously at this bright comet, which seemed as though after flying with inconceivable swiftness through infinite space in a parabola, it had suddenly, like an arrow piercing the earth, stuck fast at one chosen spot in the black sky, and stayed there, vigorously tossing up its tail, shining and playing with its white light among the countless other twinkling stars
與之相反，皮埃爾興高采烈地睜開他那雙被淚水沾濕的眼睛，凝視著這顆明亮的彗星，它彷彿正以非言語所能形容的速度沿著一條拋物線飛過這遼闊的空間，忽然它像一枝射進土中的利箭，在黑暗的天空楔入它所選定的地方，停止不動，它使盡全力地翹起尾巴，在無數閃爍的星星之間炫耀自己的白光。The system uses the permanent magnet synchronous machine as the driver motor based on the idea of polygonal flux linkage locus and the permanent magnet brush - less motor is as the momentum balance motor by means of speed and current loop in order to track driver motor precisely and rapidly. the harmonious control of driver motor and balance motor is realized by making full use of the dsp hardware resource and complicated programmable logic device. the software design is composed of c and assembly language to realize motor control arithmetic of polygonal flux linkage locus
衛星天線伺服控制系統以正弦波永磁同步電機作為驅動電機，採用多邊形磁鏈軌跡法（電壓空間矢量法）的控制策略；動量平衡電機採用永磁無刷直流電機，通過電流環、速度環達到快速、精確跟蹤驅動電機的目的，確保了衛星姿態恆定；設計方案中充分利用了dsp硬體資源和復雜邏輯陣列實現了驅動電機和平衡電機的協調控制，並通過c語言和匯編語言的混合編程實現了電機的多邊形磁鏈軌跡控制演算法。One of the cartoons depicts the prophet muhammad wearing a b - omb - shaped turban with a burning fuse. in another, a soviet star and crescent moon are superimposed over his face
其中一幅卡通描繪先知默罕默德戴著炸-彈形狀的穆-斯-林頭巾，還有一根正在燃燒的引線。另一幅，是一個蘇聯的紅星和新月罩在他的臉上。In view of the limitation of traditional method of aiming at stars and object calibration, taking weapon system calibration under the special environment encountered in some engineering project for example, analyzes innovative application of weapon system zero check and adjustment under specified environment, puts forward " line calibration method ", in order to provide reference for similar weapon system or combat system calibration
鑒于傳統瞄星方法和標定物標定方法的局限性，以在工程中遇到的特定環境下的武器系統標定為例，分析了具體環境下武器系統零位檢測與規正的創新性運用，提出了「線標定法」 ，以為類似情形下的武器系統或作戰系統標定提供借鑒。Now, the sharpest - ever visible - light images taken by hubble are also helping astronomers confirm decades - old theories behind the fundamental processes of galaxy formation and evolution
現在，由哈勃拍攝的光線最清晰的圖像正幫助天文學家們證實數十年來有關星系形成和進化的基本過程的舊理論。分享友人