水面航速 的英文怎麼說

中文拼音 [shuǐmiànhángsù]
水面航速 英文
surface speed
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 航 : Ⅰ名詞（船） boat; shipⅡ動詞（航行） navigate （by water or air）; sail
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 水面 : the surface of the water; table水面操縱 surface manoeuvering; 水面導航 surface navigation; 水面發...
  • 航速 : speed of a ship or plane; navigational speed
  1. In 1990 ' s, the growing speed of passenger transport has surpassed that of cargo transport and become the trend of traffic industry development in the new period. there is an obvious digressive trend of waterway passenger transport volume and turnover volume because of the fierce competition between railway, road and aviation, and relative falling behind of waterway technology

    進入90年代之後，旅客運輸增長速度超過了貨物運輸，成為交通運輸業在新時期的發展趨勢，鐵路、公路和航空的激烈競爭，加之水路客運技術狀況的相對落後，使水路客運量和旅客周轉量都出現明顯下降的態勢，水路客運面臨新的機遇和挑戰。
  2. In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane

    本論文系統研究了自主式水下航行器的建模、非線性自適應滑模控制、以及深度調整和水平面導引方法等問題，具體成果和創新點如下1 、根據流體力學理論，建立了螺旋槳推進器的動態模型，它以螺旋槳來流速度v _ p和螺旋槳轉速n為狀態變量，以電機施加轉矩為輸入，螺旋槳推力t和轉矩q為輸出。
  3. When sailing in waves, a part of ship bow will depart from water surface because of the significant heave and pitch ( mostly happened at bow in head seas, and may happened at stern in follow sea ). when ship enter into water once again, violent impact with waves will happen, which is called slamming

    當船舶在波浪中航行時，由於劇烈的垂蕩和縱搖，船底的一部分會露出水面（主要是在迎浪時發生在船體前部，但在低速隨浪時也可能發生在船體後部） 。
  4. Another based mathematics model about the anchor cable is used for ship - anchor system. the numerical calculation have been worked by programmed in the matlab language. at the same time the influence that the dragging speed of antisubmarine helicopter and the height over the surface of ocean acts on the shape and the tension of underwater cable, and that the current velocity and the diameter of anchor cable acts on the shape and the tension of anchor cable, has been calculated

    把建立的水下拖索數學模型和錨索數學模型分別應用於航空吊放聲納探頭?纜繩動力學系統和船?錨系統，採用matlab語言編程進行了數值計算，同時分別計算和分析了反潛直升機拖速、距海面高度對拖索形狀和張力的影響以及海流速度、錨索直徑對錨索形狀和張力的影響。
  5. Anyone who has watched a speed-boat will know how the bows of the boat lift out of the water when it is travelling at speed.

    看過快艇的人會注意到：當快速航行時船首翹起離開水面。
  6. This paper presents a wider research field - risk analysis. through the study of the effects that threat factors and error factors impact on the flight risk and adjusting performance rules, the horizontal safe corridor, threat avoidance, vertical altitude real - time modification and the fastest trajectory programming are progressed

    總結前人在該方面的研究成果，提出一個更加廣義的研究角度? ?風險分析。通過對威脅因素、誤差因素對飛行風險的作用，調整性能準則而進行了水平安全走廊設計、威脅迴避、垂直離地高度實時修正以及最快速航跡規劃。
  7. A 2 - d hydrodynamic - numerical model was applied to typical rocky rapids called jiyutan by comparing different computational models. based on the comparison of different schemes, the change of the discharge and the flow current in a branch were analyzed, and the relationship between the flow condition and excavation area, scope as well as mode was discussed, the conclusions show : ( 1 ) in a branching rocky rapids, the velocity may be reduced and flow condition can be improved by excavating one channel partly

    本文在對各種數學模型比較的基礎上，應用二維水動力數學模型研究典型石質汊流灘? ?廣西潯江鯽魚灘航道整治工程方案，通過各方案計算結果比較，分析了不同汊道的開挖及汊道內不同開挖面積、開挖范圍以及開挖方式所引起的分流比及工程區域航道水力條件的變化規律，研究結果表明： （ 1 ）對于石質汊流灘來說，在某一汊道通過局部開挖河槽，擴大過水斷面面積，可以達到降低工程段流速、改善局部水流條件的目的。
  8. The main measures are : damming improving flow condition riverbed excavation etc. riverbed excavation is always used in reducing velocity of a channel with bad flow condition. in singularity channel, velocity can be reduced with the increase of crossing area by excavating riverbeds

    整治採取的主要措施有：築壩壅水、改善流態、開挖河槽等等，對于流態惡劣的急流灘，常採用開挖河槽擴大過水斷面面積的方法來降低航道流速。
  9. Excavating riverbeds in one channel may not only reduce the velocity area in some areas but also increase the velocity in other areas by increasing flow rate in this channel without correspondent changes in riverbeds of rocky rapids. in result, the velocity in waterway may be increased instead of be reduced, the flow condition may also be deteriorated. thus, which branch should be excavated and how to excavate in improving the flow condition of the branch should be further explored

    但在分汊河道內，情況較為復雜，在一汊河道內採取開挖措施后，雖然其過水斷面有所增加，局部流速相應降低，但是由於工程后，汊道的分流比將會相應變化，而石質河床一般無法通過沖淤變化以適應水流條件的改變，因此，航道內工程處的流速可能降低，也可能不降反而有所增加，惡化了航道的水流條件。
  10. New requirements on marine navigability and the related research works are brought forward along with the high - speeding trends of the surface ships

    水面船舶在追求高速化的同時，也對艦船適航性及其研究工作提出了更新的要求。
  11. But in local region it is mainly controlled by the regulating structures. the planar velocity is of the parabola distribution

    模擬結果表明，整治河段水流的流速分佈主要受制於河道的平面兒何形態，局部區域航道整治建築物起主要作用。
  12. For this reason, the comprehensive layout and integrated regulation of the area from zhuqi to kegong in minjiang river are urgently needed, these measures will improve the natural conditions of minjiang river and enhance the ability of flood controlling, shipping and drainage to insure the security of fuzhou

    為此，急需對閩江竹岐至科貢、文山裡河段進行全面規劃和綜合整治。使得在經濟持續高速發展的同時，改善閩江自然條件，提高防洪排澇、通航及取排水等能力，確保福州市防洪安全。
  13. Abstract : variations of flow pattern, flow velocity in deep poo l and side bar, mainstream thread, and water surface, caused by excavation project, are investigated by two - dimensional mathematical model in an orthogonal curvili near coordinate system. the change of bed - load transport rate, and redeposition r ate are predicted. the influences of the excavation project on navigation are ana lyzed. grid - type and flat - type excavation alternatives are proposed and discuss ed

    文摘:採用正交曲線坐標系下的河道平面二維數學模型，研究了嘉陵江何家磧邊灘采砂后河道流勢、流態、灘槽流速、主流位置、水面高程及比降的變化規律，預測了采砂方案完成後卵石推移質輸沙率變化及其對航道的影響，並對格形開挖和平整開挖方案進行了比較分析
  14. Based on the analysis and calculation of ship resistance, according to the main factors influencing the resistance, such as sailing speed, water depth and ship draft ratio, and coefficient of sectional form, the deepwater, shallow water and restricted channel are defined by the coefficient factor

    摘要通過對船舶阻力的分析和計算，根據影響阻力的主要因素，航速、水深與船吃水比、斷面系數，由換算系數來界定深水、淺水與限制性航道。
  15. The special conditions include the high - speed and complicated crashes of ground, water and space vehicles, as well as the conditions with the limitation on the weight of ops and the requirements on explosion - proof and environment protection performances

    所涉及的特種條件包括地面和水面運載工具的高速復雜碰撞以及航天運載工具著陸時的復雜碰撞條件，同時也包括對乘員保護裝置的質量限制、防爆性能要求和環保性能要求等。
  16. Ate plays a more and more important role in the test and repair of aircraft avionics, and can considerably improve servicing quality and efficiency. our task is to develop a new type of ate used to test six kinds of aircraft avionics instruments located in the cockpit. it should be able to fulfill the test of all functions and performances of each instruments according to it ’ s component maintenance manual

    本文研究一種新的航空儀表自動測試設備，能對六種分佈於駕艙內的指示型航空電子儀表?空速馬赫數指示器、電動氣壓高度表、無線電距離磁指示器、地平儀、姿態指示儀、水平位置指示儀進行檢測，完成維修手冊所規定的全部功能、性能方面的綜合測試。
  17. The main tasks of this thesis are : discussing the dead - reckoning theory of doppler velocity log and compass, decreasing location error methods, emulating several ship tracks ; discussing several aspects influencing the velocity precision of doppler velocity log ; in a pool trial, processing the trial data and achieving some conclusions

    本論文主要研究工作包括：對羅經和多普勒計程儀推算輔助導航系統的工作原理，及減小定位誤差的兩種方法和幾種軌跡進行了研究；對影響多普勒計程儀測速誤差的各個方面進行了綜述；最後對多普勒計程儀水池試驗的數據進行了處理，得出所要結論。
  18. Applying the method studied in this thesis, theoretical calculation of certain container ship in regular wave has been done on ship motion and hydrodynamic pressure. it also has the results compared with those obtained under multipole conditions in the model tests. as a consequence, we abstract some characteristics of the distribution of instantaneous hydrodynamic pressure on ship wet surface, and the distribution changes with forward speed and wave parameters

    利用本文方法對某集裝箱船進行了規則波中的船舶運動和水動壓力的理論計算，並與船模水池試驗所提供的多狀態的壓力分佈數據相比較，得出船體表面瞬時壓力的分佈及其隨航速和波浪參數變化的某些規律。
  19. However, the use of this technique has been very limited in the sonar environment mainly because of difficulties of maintaining a stable track under water and problems of under - sampling of the aperture arising from the relatively slow velocity of acoustic waves in water

    但是直接將窄帶合成孔徑雷達技術應用於水下聲納卻遇到了困難。困難主要來自以下三個方面：首先，聲速很低，這使得聲納必須航行的相當慢，以保證對聲孔徑進行足夠的采樣。
  20. The resistance of navigating vessel would be cut down and lead to the purpose of improving the velocity or decreasing the power of main engine while maintaining the velocity, if the technology of reducing the friction by microbubbles jetted from the bottom of vessels, which makes the water close to the vessel ' s bottom become the mixture or water and microbubbles and form a thin gas layer, could be applied in ships

    如果把微氣泡減阻技術應用到船舶上，在船舶底部噴射微氣泡，使與船舶底部接觸的水變成水與微氣泡的混合液，形成一薄層氣膜緊貼在船底表面，就可以達到提高航速或航速不變減小主機功率的節能目的。
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