船首波 的英文怎麼說
中文拼音 [chuánshǒubō]
船首波
英文
stem wave-
In sailing - crazy annapolis, boaters celebrate the first day of spring with a ceremonial burning of the socks, signifying it will soon be warm enough to wear shoes without socks
在「航海之鄉」安納波利斯美國馬里蘭州首府，船工們會在春季的第一天舉行燒襪子儀式，以慶祝春天的到來。The first day cover sets the scene of zheng he s fleet under full sail in rough seas with seagulls in flight, representative of the determination and enterprising spirit of these formidable explorations, against a backdrop of fine silk that symbolises success in foreign trade
首日封繪畫滾滾波濤中高張雲帆的船隊。前方的海鷗翱翔展翅，隱喻船隊不畏險阻、奮勇向前的精神；背景則以精美的絲綢襯托，象徵通商貿易的美滿成果。First, the noblesse new slender ship theory is introduced and modified to make it suitable for numerical calculation, with which we can calculate the wave - making resistance coefficient of a ship
首先引入noblesse新細長船理論，通過在理論方法上的改進，使之適合於半滑行船興波阻力系數。Radar echoes include echoes of lands, islands, all kinds of moving targets, racon, sart and sea, etc. arpa marks consist of fixed range marker, variable range marker, electronic bearing line, guard zone, heading - line, parallel index ( 4 navigation lines ), vector lines ( or pad ) and past track information of tracked target ships, marks of trial manoeuvres, ect
雷達回波包括陸地、島嶼回波，各種活動目標的回波，雷康、 sart回波，海雜波等。 arpa符號包括包括固定距標圈、活動距標圈、電子方位線、警戒圈、船首線、 pi線、已錄取目標的矢量線以及歷史航跡（或pad ） 、試操船符號等。On 1 july 1975, the us apollo spacecraft docked with the soviet soyuz spacecraft while in earth orbit. this was the first international cooperative space flight
1975年7月1日，美國阿波羅太空船利用由美國和蘇聯共同研發的靠站設備，與蘇聯的聯合號一起在地球的運行軌道靠站，這是國際首次在太空飛行方面的合作。Firstly, the methods to restrain the effect of ship swing are studied for two - axes shipbome radar. two different methods based on ship rectangular frame and inertial frame are proposed separately according to consistence of radar base angle and beam angle
本文首先研究了艦載兩軸雷達系統抑制船搖的方案，對雷達天線轉角和波束轉角一致和不一致的情況，分別提出了基於甲板坐標系穩定和基於大地坐標系穩定的不同方法。Inventor john stevens " boat, the juliana, begins operation as the first steam - powered ferry ( service between new york, new york, and hoboken, new jersey )
1811年的今天，發明家斯蒂芬製造的「茱莉安娜」號蒸汽船成為首艘在紐約市及新澤西州霍波肯之間提供渡輪服務的蒸汽機船。According to different water phenomena, we use two different method to produce waves source : the first method is by specifying the boundary conditions and initialization conditions, this method simulate the dam breaking, reflection and diffraction of water waves ; the second method is by specifying disturbance model, this method simulate water droplets, waterfall, waves of ship ; in the first part of this thesis, we discuss the prevalent methods of the simulation of water scenes, in the second part of this thesis, we describe the numerical methods of solving the shallow water equations using the finite difference method and the finite volume method respectively, in the third part of this thesis, we simulate some realistically liquid phenomena such as rain droplets, the waves of ship, dam breaking etc
產生水波首先要有波源，設置不同的波源便可以得到不同的水流情形，我們用兩種方法來產生波源：一種是通過設置邊界條件和初始條件產生，這種方法用於模擬潰壩波的反射、折射等現象；另一種是通過擾動控制產生，這種方法用於模擬雨滴、瀑布、船波等自然現象。本論文的第一部分我們討論了目前水動畫模擬常用的幾種方法；在第二部分討論了我們所使用的兩類數值方法：有限差分方法和有限體積方法；在第三部分我們模擬了雨滴、船波、潰壩波等一些水流現象。In general, the upward amplitude curve " curvature is larger, and it changes quicker. on the contrary, the downward is smaller and slower ; because the flare force contains the square of the wave elevation velocity, it results in an difference between the flare force frequence and the associated moving frequence ; the flare force decreases the downward amplitude of heaving oscillations ; the speed of ship has an ignorant effect on the peak values of three calculated values, but there is an obvious effect on the oscillating frequence ; the wave amplitude has an effect on the ship motion, and there is an linear relation between the oscillating amplitude and the wave amplitude on the whole. by the way, there are some experiences and lessons according to the progress calculation : before the calculation of the ship motion, we should checkout the balance in a calm water firstly, namely, the whole displace of ship and the longitudinal position of the center of gravity must be consistent with the draft in calm water, or else, the calculation may show the " floating " phenomenon ; the mixed language programming has a lot of virtues, but it exists a fatal limitation - the debug of dll
研究表明：在某些頻率范圍內相關水動力系數基本不隨吃水變化，只有超過某一頻率后水動力系數的值才會出現差異；在橫搖方向，水動力系數並沒有隨著吃水的變化發生規則變化，而是出現了波動現象；近船首剖面的水動力系數計算表明，水動力系數的波動非常大，並遠遠偏離了平均位置的水動力系數值，值的變化速率也不盡相同，總的看來，上振幅曲線曲率較大，變化較快，下振幅曲線曲率較小，變化較慢；外飄力和波面運動的速度的平方項有關，導致其振動頻率和相應運動方向的頻率不同；外飄力使升沉向下運動的幅值減小；船速對三個計算量的峰值影響甚微，但對振動頻率有明顯影響；波幅對船舶運動的影響是明顯的，船舶運動的幅值基本上和波幅成線性關系。At the same time, figures involving attribute data about flow field at inlet and outlet downstream or wave motion of water at the downflow head of lock chamber of siyang navigation lock were displayed through gis application system which we developed. according to data of baoying navigation lock acquired by mathematics model, figures about velocities which have the same value, velocities toward cross direction which have the same value and flow field at inlet and outlet upstream were formed. achievement data, space information and attribute information were in connection with figure so as to search for and analysis the information, which is satisfying
同時完成了江蘇泗陽船閘下游引航道非恆定流及其改善措施的計算分析研究和寶應船閘上游引航道口門區水流條件計算分析研究，運用gis技術和所設計的gis應用系統對泗陽船閘下游引航道內流場以及下閘首水位波動情況進行信息顯示，根據對寶應船閘的計算結果生成上游引航道口門區等流速圖、橫向流速等值線圖和流場圖，使計算分析成果數據、空間信息、屬性信息與圖形顯示有機結合，便於查詢分析，效果令人滿意。Before h wave filter is designed, the control system model must be known, so the mathematics model of the ship motion and the wave disturbance are introduced. 3
在應用h _濾波技術設計海浪濾波器時，必須首先知道被控對象的數學模型，因此在設計h _海浪濾波器之前，我們簡單的介紹了設計時需要用到的船舶運動數學模型和海浪干擾模型。It was the first extraterrestrial matter to be returned to earth by a spacecraft since the u. s. apollo and soviet luna missions brought back moon rocks in the 1970s
自上世紀70年代美國「阿波羅」號和前蘇聯「月球」號航天飛船帶回月球巖石採集樣本以來，這些太陽粒子是首批由太空飛船帶回地球的外星物質。The positions at which the spacecraft first crossed the “ bow shock ” of the magnetospheric interaction with the solar wind, passed closest approach to the planet, and crossed the outbound bow - shock crossing are indicated
陣地上飛船首次跨過"弓形激波"的磁層與太陽風的相互作用，通過最親密的態度來處理這個星球，並穿越外弓形激波兩邊的表示。分享友人