通海水系 的英文怎麼說
中文拼音 [tōnghǎishuǐxì]
通海水系
英文
external drainage-
The posture characteristics and systematic measurement of burbot was compared be tween jingbo lake and baikal. the genetic variation of the posture characteristics of the jingbo lake burbot was discussed from
通過對位處黑江水系南緣位置的鏡泊湖所產江鱈體態性狀的系統測量統計數值,與屬北極海水系的貝加爾湖江鱈的同等性狀進行對比,用統計學The thesis analyzes the transmitting characteristic of the uwa channel, derives the propagation losses, eigenrays and channel impulse responses of uwa channel by use of the kraken normal wave mode and the ray trace algorithm based on velocity - depth curvilinear profile approximation. based on the analysis, a scheme of auto - replying lduwarc system by means of spread spectrum technique has been designed
論文首先分析了遠程聲遙控通道傳輸特性,分別利用kraken簡正波和射線跟蹤模型對深海和淺海水聲通道的傳輸特性進行分析,對通道的多徑結構、衰落和環境噪聲進行了計算,並在此基礎上設計了基於擴頻技術的自主應答式遠程聲遙控系統方案。Poiycyclic aromatic hydrocarbons ( pah ) are priority trace organic pollutants in the clrtap ( convention on long - range transboundary air poliution ) pops ( persistent organic poilutants ) protocol. both laboratory experiments and fie1d surveys unequivocally demonstrated that pah adversely affect estuarine and marine organisms. pah are implicated in the development of iesions and tumors in fish, they produce biochemical disruptions and cell damage that iead to mutations, developmental malformations and cancel although many marine organisms do not exhibit acute responses to pah " exposure, but suffer sublethal effects
本論文以湄洲灣海域和廈門西海域養殖區為研究區域,採用現代分析技術,從分子水平上系統研究了多環芳烴( pah )在海水、沉積物、養殖魚類中的含量分佈:通過現場實驗,實驗室暫養、投毒和恢復實驗系統測定了養殖魚類的肝臟、膽汁、鰓、全血等不同器官、組織的生化指標及養殖魚類肝臟、膽汁的化學指標,探討了這些指標對水環境多環芳烴污染的生物指示作用。This paper studies the mechanism generated from flow - noise in seawater pipeline, introduces controlling method of flow - noise, analyzes sound field characteristics of flow - noise in seawater pipeline system and the merits and demerits of measuring the flow - noise methods in and out of the pipeline. in our experiment, a test measuring device of seawater muffler is used in a measuring chamberlet to verify that a method of reverberation chamberlet is difficult to exactly measure the low frequency flow - noise in pipeline. at the same time the insertion lose of water muffler in the low frequency was measured by the measuring chamberlet method
本文分析了海水管路系統內流噪聲的產生機理,介紹了流噪聲的控制方法;分析了海水管路系統中流噪聲的聲場特性以及流噪聲管內、管外測量方法的優缺點;通過海水消聲器試驗測量臺架,利用測量小室驗證了混響箱法難以準確測量海水管路系統中的低頻流噪聲;用測量小室對水消聲器在低頻段的插入損失進行了測量。So, in this thesis research, the information fusion is not only a data disposal process from lowers to higher, but also the feedback from higher to lower, that means the higher takes part in the d ata fusion of lower. simulations and trials validate all these methods and the results of these show that it is very effective to improve the control performance of auv by applying data fusion technology to the motion control system
本文通過水下機器人的模擬試驗和海上智能作業試驗進行驗證,試驗結果表明,將多傳感器信息融合技術應用到水下機器人的運動控制系統中,提高了整個控制系統的可靠性和保障水下機器人的安全航行和完成任務,促進水下機器人智能控制技術的發展。Performance analysis of underwater acoustic digital communication system in a shallow water channel
淺海通道水聲數字通信系統的性能分析The salvage system at sea of our country is the safeguard of lifesaving in coasta areas, property on board saving, fire fighting at sea, clearing of oil pollution on emergency, traffic and transportation by sea as well as exploiting of marine resource
我國海上救助系統擔負著沿海水域海上人命救助、船舶財產救助、海上消防、海上溢油應急清除和其它海上交通運輸及海洋資源開發的安全保障任務。Facing the information age, the marine environmental information systems should also absorb the article intelligence technology and virtual reality technology to serve as a decision - making support system and export system for the ocean environment study and development. thirdly, based on maplnfo ( gis software ) platform and development languages ( vb and mapbasic ), marine environment information system in luoyuan bay was designed and development, then relied on gps and rs, ocean environment information in luoyuan bay was collected and managed effetely, its aim is to provide a reasonable opinion for decision - maker on how to utilize resources and protect environment in luoyuan bay. lastly, marine environmental quality of aquafanns in luoyuan bay was assessed relied on marine environmental information system and mathematics model ( fuzzy cluster ), and corresponding countermeasures were presented to protect ocean environment in
本文首先通過對海洋環境信息系統的特點和國內外研究現狀的分析,探討了網路時代海洋環境信息系統的發展趨勢;接著以mapinfo ( gis軟體)為開發平臺,以vb和mapbasic為開發語言,面向管理和決策層,進行羅源灣海洋環境信息系統的設計與開發,並結合遙感( rs )和全球定位系統( gps )建立模型庫,收集和管理羅源灣海洋環境信息,旨在為羅源灣的海洋建設項目的立項、選址、規劃和海洋污染事故的應急提供決策支持,從而有效地保護羅源灣海洋生態環境;最後運用羅源灣海洋環境信息系統並結合數學模型(模糊聚類)對羅源灣養殖區水環境現狀進行評價,從而使得羅源灣各海水養殖區的水質現狀評價變得生動、形象和直觀,並針對羅源灣海洋污染源狀況和污染現狀,提出了保護羅源灣海洋生態環境相應的對策。A monte carlo algorithm was presented to model the relation between the scattering phenomenon, depolarization changes and sea water depth, it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth. at last, a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water, and studys the corelation between scattering and relative refractive index, particle density and particle size in the sea water. the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size, particle density and relative refractive index. the methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water
本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現象以及散射中的退偏度變化與海水深度的關系,發現隨著海水深度的增加,散射后的光斑半徑、退偏振度將逐漸增大。最後通過光學工程軟體( lighttools )對海水中的散射進行模擬實驗,研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結果表明,隨著粒子半徑、粒子密度和相對折射率的增加,散射的強度將顯著增加。The quality of maritime training units directly influences marine seafarers " technical quality which is a crucial factor for maritime traffic transport system. therefore the technical level of seafarers to be trained is determined by the condition and quality of the training units
船員技術素質的高低直接決定著海上交通運輸系統的安全,而船員培訓機構的培訓質量又直接影響著船員技術素質的高低。培訓機構的條件不一樣,培訓質量不一樣,培訓出的船員技術水平也不一樣。This dissertation presents the author ' s main contributions in the studies of the sea optical scatter channel by use of monte carlo simulation on the background of airborne oceanic submarine laser communication system. physical and optical properties of physical constituents in sea optical scatter channel are studied and summarized
本文以機載海洋激光對潛通信系統為背景,分析和概括了海水光散射通道中的各物理成份的物理和光學性質,討論了海水的固有和視在光學性質。There must be a marine casualty happened every 4 days before 1984, the amount of marine casualty happened at this area corresponds to 1 / 7 amount of the whole changjiang " marine casualty, so mariners gave it a name as " mouth of tiger ". due to the specific geographical condition and the extremely representative vessel traffic management of changjiang yingongzhou channel section, many intelligent people began researching and practicing the vessel traffic management of this changjiang " s down - stream complicated channel section from 1980s, at dec 15th 1984 the authority at that time - changjiang yingongzhou channel section previously ; up to the last years of 1980s ministry management administration applied traffic control on changjiang yingongzhou channel section previously, up to the last years of 1980s ministry of communications assigned shanghai marine college, shanghai ship & shipping research institute and changjiang harbor superintendence administration to make feasibility demonstrate about modern vts of zhenjiang traffic control section ; in 1990 dasha radar station which is the first radar vts station with inner river was finished, groped a new way for applying modern radar traffic control of vessel traffic management ; in 1997 the vtms of changjiang " s down - stream from nanjing to liuhekou was completed with connecting net and came into operation formally, meanwhile the signals of dasha radar station were conveyed to vts center by light cable, and then united applying vessel traffic management upon the whole authorized area ; in jun 2001 jiangsu msa made changjiang yingongzhou channel section as the first experimental group of creating " civilized, safe, passable channel activity, updating dasha radar antenna and receive - transmitter building closed - circuit television monitor system, setting uo safety warning board, starting navigational route reformation, carrying out united construction
1984以前這里平均每四天就發生一起海損事故,事故數占整個長江的1 7 ,被行船人稱為「老虎口」 。長江尹公洲航段緣其極為特殊的地理區位條件和極具代表性的船舶交通管理,從上個世紀八十年代初就有識之士開始了這個長江下游最復雜航段的船舶交通管理探索和實踐。 1984年11月15日當時的長江航政管理局在長江尹公洲水域率先施行交通管制;到八十年代末交通部委託上海海運學院、上海船舶研究所和長江港監局聯合開展鎮江交通管制段建立現代化交管系統的可行性論證; 1990年大沙雷達站? ?內河第一座雷達交管站建成,摸索實施現代化雷達交管的船舶交通管理新途徑; 1997年長江下游南京至瀏河口船舶交通管理系統建成聯網投入正式運行,同時將大沙交管雷達信號通過光纜傳輸至交管中心,統一實施全轄區船舶交通管理; 2001年6月江蘇海事局將長江尹公洲航段作為第一批創建「文明平安暢通航段」活動試點航段,更新大沙雷達天線和收發機,著手閉路工業電視監控系統建設,設立安全警示牌,啟動航路改革,開展聯合「共建」 。Surrounding areas and public facilities, a hospital, the capital stadium, kentucky, carrefour integrated facilities, walking 10 minutes to reach xizhimen and metro subway station, beijing zoo, beijing reef, the beijing planetarium, north development theater, city tourism port is near water
周邊交通和公共設施完善,有人民醫院首都體育館肯德基家樂福等綜合設施,步行10分鐘即可到達西直門城鐵和地鐵車站,北京動物園北京海洋館北京天文館北展劇場京城水系旅遊碼頭更是近在咫尺。This project - _ the remote control system for water - saving irrigation automation for sanlian irrigation district commissioned by irrigation works bureau of nantong and irrigation works bureau of rugao, was researched and designed in the paper
本課題是受南通市水利局和如皋市水務局委託,為如海灌區三聯分灌區研究和開發一套節水灌溉自動化遠程控制系統。Abstract : by experiment, the effect of b2o3 on high - temperature performance of magn esium refractory was analysed systematically. the mechanism of boron contaminatio n in the process of magnesium oxide synthesis with bittern or sea water and the way of preparing magnesium oxide with low boron content were described
文摘:通過實驗,系統分析和闡述了b2o3對鎂質耐火材料高溫性能的影響,鹵(海)水合成氧化鎂過程中硼污染的機理,以及制取低硼氧化鎂的有效途徑。Thus when the government implemented the use of seawater for flushing, it could only make it mandatory for new buildings or those under reconstruction programmes. the 1st january 1965 officially marked the official implementation of the seawater flushing system in hong kong
因此,在決定推行海水沖廁政策時,政府只可立例規定新建成樓宇或重建的舊樓宇,設有適合海水沖廁系統的供水管道。新法例1965年1月1日正式通過,海水沖廁的構思才算真正確立。The flow - noise in seawater pipeline has more influence on working environment and warship personnel health, and radiation noise from the pipeline exits also seriously effects on the hiding ability of warships
海水管路系統的流噪聲對工作環境及艦船人員身體健康有較大的影響,並且通過管口向艇外輻射噪聲,嚴重地影響艦船的隱蔽性。In order to analyze the fluid dynamic characteristic in seawater pipeline system, the test device of fluid dynamic characteristic in seawater pipeline system is set up. in this experiment, the velocity of pressure wave propagation is measured by frequency analysis technique and the measured result is reliable. according to the frequency analysis technique and a basic theory of linear transfer matrix, the pulsation pressure value in pipeline is predicted by the measured values from four pressure transducers
為了分析海水管路系統內流體的動態特性,建立了海水管路系統流體動態特性實驗臺架;在實驗中利用譜分析技術對壓力波傳遞速度進行了測量,測量結果可信;並利用譜分析技術及線性傳遞矩陣基本理論,通過多個壓力傳感器的測量值預測了管路中的脈動壓力值,實驗結果與理論計算之間吻合很好;分析了流體動態特性實驗臺架本身的自循環特性對海水管路系統中脈動壓力測量的影響。And concerning boundary conditions along piping system are properly set. futhermore, vertex sound is discussed in this paper. effect of the noise reduction about the mufflers is analysed, and a lot of trials is used to testify exist of valve noise and influence to pipe system. there kinds of mufflers are proved that they can reduce the fluid niose of pipe system by a large number of experimentation
對噪聲的抑制裝置? ?消聲器的降噪效果進行了分析,並結合實際工作建立了模擬海水管路試驗臺架,通過一系列試驗,說明閥門噪聲的存在,及其對管路流噪聲的影響,證明設計的三種結構消聲器對管路流噪聲的良好消減效果。Therefore, this paper studies three kindsvalves such like bufferfly valve, brake valve and ball valve, with the numerical simulation method by cfx which is often used to simulate the fluid. by the simulation of three kinds of valves, we can kown dynamic characteristic of them. in this paper, i not only simulate for three kinds of valves, but also analyse cause of flow - noise and give respectively mathematical model of main noise sources in piping system such as pupm and valve
本文通過cfx軟體,用數值模擬的方法,對海水管路系統中常見的三種閥門(蝶閥、閘閥、球閥)流動特性及噪聲進行了模擬分析,闡明閥門噪聲產生的機理,建立了泵和閥門等噪聲源的數學模型,並對管路系統中涉及到的邊界條件做了適當的處理,分析了閥門下游的渦聲。分享友人