航道寬度 的英文怎麼說
中文拼音 [hángdàokuāndù]
航道寬度
英文
channel width-
Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece
將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義Considering the precision and cost of sea - route in our country, gps oem board was selected positioning for system in stand - alone model ( not dgps ). there is abundant time to processing and optimizing data for gps receiver because the reactive speed of pharos is on hour level contrast to strict real time
根據航道定位精度要求與成本承受能力，系統選取低成本的gpsoem板接收機進行單機定位，由於航標燈監控有一定實時性但又非嚴格意義上的實時性，其反應速度可到小時級，這為gps接收機定位提供了寬裕的時間作為數據處理與優化。Simulator tests indicates the speed ; wave ; angle between ship and wave are main factors of the sinkage. difference factors given difference sinkage with simulator tests. 3. the date of width ; depth are two important factors of channel design, the relationship between width to depth is speed
（ 3 ）航道寬度和航道深度的關系，聯結這二者關系是航速，航道寬度和航道深度是決定航道參數的二個重要因素，並相互存在著一定的關系。The content of the study as follow : 1 to choice the ship form, mainly ship ' s overall size ; draft, according to design of shanghai deep - water port and development of container ; 2. to deside the date of width ; depth ; path ; tract and sinkage through simulator tests ; 3. to replenish and modify some date for channel design to very large container vessels in " design code of general layout for sea port " 4. to study ship ' s turning area ; ship ' s stop distance the new and special content of the study as follow : 1. statistics of path at the channel given by difference operators with the affections certain wind. currents. seas and other influences shows the path really needed under certain condition
並可在各類航道和水域的通航安全評估及操船方法，航跡帶寬度，航道寬度，航跡帶分佈，船舶各種航行狀態時的下沉量研究中應用。本課題研究的內容： （ 1 ）根據洋山深水港設計規劃和集裝箱船舶的發展趨勢，通過研究、分析、比較，選擇最合適的船型，尤其是船舶主尺度和船舶吃水。 （ 2 ）在大量模擬研究情況下，得出進港航道所需的航道寬度和深度。The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering
本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。There are many factors must be desided such as width ; depth ; ship ' s turning area ; ship ' s stop distance during the design of shanghai deep - water channel. very large container vessels. navigating at the channel with the affections certain wind, currents, seas and other influences, may cause more huge damage and expenditures for the accidents without safety operation. some date for channel design to very large container vessels has been gone beyond in " design code of general layout for sea port " and needs to replenish, modify. the purpose of this study is : to choice the ship form, mainly ship ' s overall size ; draft, according to design of shanghai deep - water port and development of container, then to get the date of width and depth of channel through simulator tests
對8000teu 、 5250teu超大型集裝箱船舶的航道寬度設計已超出了該規范的規定范疇，急需補充甚至修改。本課題研究的目的是根據洋山深水港設計規劃和集裝箱船舶的發展趨勢，通過研究、分析、比較，選擇最合適的船型，尤其是船舶主尺度和船舶吃水。在此基礎上，採用船舶操縱模擬器進行航行模擬研究，在大量模擬研究情況下，得出進港航道所需的航道寬度和深度。Investigation and discussion of the regulation measures for waterway of baiyutong shoal of songhuajiang river
沖積河流航道整治線寬度的研究On the basis of the research on the channel transit capacity of single vessel, and with the combination of previous research methods, a comprehensive assessment model is set up in view of the effective width of the channel ; the passing depth of the channel ; the time taken for passing at high tide. some new viewpoint are developed from the mathematical analysis on the width of the track belt
針對基於單船的航道通過能力的研究，結合以往研究方法，確定了以航道有效寬度、航道通航水深及乘潮歷時為考察對象的綜合評定模型，針對將數學方法結合數值模擬對航跡帶寬度的求解提出了一些新的見解。It is a narrow waterway. in some places, the width of it is only about 80 meters. it is very necessary to establish vts and it will improve the safety of the traffic
武漢轄區全長494公里，屬于狹窄水道，有部分航道寬度只有80米，興建vts ，十分必要，也將對交通安全起到積極的促進作用。This paper conducts simulation experimental research on channel navigation area using large - scale ships operation simulator, including the ships ' danger under different wind, wave and flow conditions and safety appraisal result, time needed for entering and leaving port, and recommends the reasonable width of waterway, so as to provide reliable basis for engineering structural design and working - out of ships - operation regulations
摘要利用大型船舶操縱模擬器對航道航行水域進行模擬試驗研究，包括不同風、浪、流等環境下操船危險度及安全評價結果，進、出港所需時間，並推薦航道的合理寬度，為工程結構設計和操船規程的制定提供可靠依據。分享友人