徑斷面 的英文怎麼說
中文拼音 [jìngduànmiàn]
徑斷面
英文
edge grain-
The method of modified simplex was applied to optimize the models, and the fitting results show that liu - logistic model was more suitable than logistic model to the actual growth trend of form. taxus chinensis var. mairei population, and the highest growth rate of basal area was the tenth age class, namely the phase when breast diameter was 68 ~ 76 cm
以胸高斷面積代替種群生物量，分別採用logistic常規模型及劉金福提出的logistic改進模型對南方紅豆杉種群的增長動態進行研究，運用改進單純形法對模型進行優化，擬合結果表明改進模型比logistic常規模型更符合南方紅豆杉種群的增長趨勢，南方紅豆杉種群的最大增長速度出現在第10齡級，即胸徑為68 76cm時期。We put forward an algorithm for self - discrimination of island relation and an automatic intersected method of the region machining unit, which can judge the relationship among any plane obturate contour line effectively and swiftly. we also study the tool path generation technology of two - dimensional machining, basso - relievo machining, three - dimensional lifting - pen machining. meanwhile, we put forward an optimize approach of tool path, which improve the efficiency of engraving
研究了圖像的刀具路徑生成技術與軌跡規劃問題，提出了基於射線的島嶼關系自動判斷和區域加工單元的自動分割方法，有效、快速地判斷了平面任意封閉輪廓線之間的關系，研究了平面任意區域填充加工、浮雕加工、三維提筆加工的刀具路徑生成的技術，提出了刀具路徑優化方法，提高了雕刻加工的質量和效率。Firstly, simulate flow field of rear smoke channel, plot velocity magnitude and ash concentration distribution in section of entry of heat pipe air preheater, compare with data which were measured in guiyang power station, verify simulation to be reasonable and right. secondly, simulate all kinds of factors which affect flow field ' s uniformity such as length, thickness, location of diffluent board, ash concentration, ash diameter, and so on, find the chiefly factors. thirdly, install guide board in curve channel in rear smoke channel, then simulate its " flow field, plot velocity magnitude and ash concentration distribution
在此基礎上模擬在冬夏兩季不同情況下，不同流速對熱管空氣預熱器壁面溫度的影響；然後對影響整個流場分佈的各種因素：包括分流板長度、厚度、偏離中心流道位置的偏離度、飛灰濃度、飛灰粒徑等因素進行數值模擬；最後提出在分流煙道轉彎處加裝導流板，並模擬加裝導流板后的流場分佈，得到下級空氣預熱器出口、熱管空氣預熱器進口處的斷面速度場分佈、濃度場分佈，以論證加裝導流板能達到流場均勻化的作用。As it ' s proprietary, a large numbers of bibliography resource ca n ' t be provided to common readers of internet. along with the development of network technology, it has a instancy need to conversion marc format to the information that the browser can recognize. the language xml not only can expresses the metadata, but also can show the content of data. lt can provide individuation page layout
Marc格式是目前圖書館館藏資源的主要表示格式，由於其專用性，使得目前大量的書目資源無法通過一般的搜索引擎向internet用戶提供，隨著網路技術的不斷發展，迫切需要將marc格式的數據轉換成常用瀏覽器所能識別的信息，為大眾提供服務，可擴展標記語言xml不僅可以表達元數據，而且可以揭示數據的內容，提供個性化的頁面顯示，用xml語言對marc數據進行描述是解決這一問題的有效途徑，文章提供了marc數據的xml表示方法和實現途徑。According to rigorous procedures, an experimental study was carried out to investigate the effects of jet exit velocity, flow direction, fluid subcooling and nozzle diameter on hysteresis of boiling heat transfer with impinging circular submerged jets of highly - wetting liquids
摘要系統地研究了液體在圓形斷面噴嘴浸沒射流作用下沸騰熱滯后與射流沖擊速度大小、液體流動方向、液體過冷度和噴嘴直徑等因素的影響。The species, heights, diameter breast heights, canopy widths and plant numbers in 38 quadrats of 6 belt transects, which were located in yingsu cross - section and kaerdayi cross - section lying in the lower reaches of tarim river where populus euphratica concentrated, were investigated to study the distribution patterns, aggregation intensities and distribution pattern scales of p. euphratica populations at different distances away from the river
摘要在塔里木河下游胡楊分佈集中的英蘇、喀爾達依斷面，設置了6條樣帶38塊樣地進行植被種類、高度、胸徑、冠幅、株數等因子調查，研究了不同離河距離胡楊格局分佈類型、聚集強度及其格局規模。Normally small diameter sections produced by unredrawing have inferior properties with an apparently reduced extension at failure.
在正常情況下，拉絲做成的小直徑斷面具有破壞時伸長顯著減少的不良性質。The phase change of soil moisture and inflation of the frozen moisture c ause the reduction of hydraulic conductivity by reducing the area of flow section and the aperture of soil pore space, increasing the capillary resisting force to soil moisture, and decreasing the water potential gradient because of the increasing of movement distances of soil water
導水率減小是凍結土壤入滲能力減小的根本原因，而土壤中液態水的相變是導水率減小的根源所在。土壤水分的相變及其膨脹通過減小土壤水分過水斷面面積和孔隙孔徑，增大阻力和由於增長運動距離而減小水勢梯度使凍結土壤的導水率降低。Light - gauge metal containers - round open - top cans - internal diameters
小斷面金屬容器.敞口式圓形罐頭.內徑In this thesis, first, reasons and factors for the stability of loose rock dams were summarized according to the field surveys and certain expert ' s experiences. then, researches on block stability problems were reviewed, and according to the relationship between grain size and incipient velocity, it is found that the block weight is in direct proportion to 6 - 9 power of incipient velocity, and 50 % increase of the velocity will result in about 40 times change of the block weight. after that, experiments were conducted in a flume, focusing on the relationship between incipient velocity and some main factors including block weight, water depth over the dam, cross - section size, block material and river bed material
本文首先根據散拋石壩損毀情況的現場調查資料，結合有關專家多年的整治經驗，總結出壩體的損毀原因及影響因素；對現有塊體穩定性的研究成果進行回顧和總結，並針對散拋石壩的直接損毀現象，結合山區河流的水流、地形特點，利用塊體粒徑與起動流速的關系，提出塊體穩定重量與起動流速高次方成正比的概念，流速50的增長可能導致塊體穩定重量接近40倍的變化；通過二維變坡水槽試驗，研究了壩體穩定的主要影響因素，包括塊體重量、壩頂水深、斷面尺寸、塊體材料（塊石和卵石兩種） 、護底等，結果表明對于山區河流，試圖僅僅通過增加壩體單個塊體重量或斷面尺寸來提高壩體穩定性效果甚微；最後，根據西部地區的自然、經濟、交通等條件，提出可以採用柔性混凝土鉸鏈體等一類整體性較好的護面層作為散拋石壩的防沖毀措施，以期取得良好的工程效果。In the first part, the method of velocity coefficient was used to design a 100mm diameter impeller with five single - arc - cylinder blades, and the method of velocity moment was applied to design the volute " s cross - section. the volute " s cross - section is a rectangle, which was designed as a whole structure with the front shroud of the pump. a special lighting window was designed on the side
在第一部分工作中，設計了一個帶半開式葉輪的微型泵：葉輪外徑100mm 、共5片單圓弧圓柱形葉片；蝸殼採用速度矩法設計，內為矩形斷面，和泵殼前蓋板為一整體、透明結構，側面專門設計一個打光窗口。Over the years, lrt technology has been upgraded to counter the negative effects of traffic jams, noise, environmental damage, air pollution, etc. featuring a small radius of curvature, multiple car units, modulated train set, enlarged cars both in transverse and longitudinal directions, low car floors, streamlined car design, advanced control systems, and flexible right of way, modern lrt systems have been successfully adopted to most environmental and social needs. they adequately display their merits as transportation systems ; i. e., the lrt system is able to co - exist with automobiles. the low car floor means that roads can act as station facilities, and passengers can get on and off the cars in the street
輕軌運輸系統lrt源起於歐洲街道電車street car ，街道電車一度在都市捷運化與私人機動化的浪潮沖擊下迅速沒落，但隨著都會地區機動車輛不斷增加，道路交通阻塞噪音環境破壞排放廢氣污染問題嚴重惡化之際，輕軌車輛技術已不斷提升，具備小轉彎半徑能力的聯結式車廂模組化列車編組車廂斷面長度加大加長低地板車廂流線型車廂設計，搭配先進控制系統及彈性的路權型式，使現代化輕軌系統具備有與生活空間結合重視環境問題與社會情勢並活用進化街車之都市交通工具等特徵與優點，如高性能輕軌列車與汽車共存，低底盤的車廂創造無障礙車站空間，道路即是車站設備，旅客可以在街區上下車，提供沿線居民高度的便利性，消除交通堵塞噪音及空氣污染等，輕軌系統並與街景充分的調和，成為活動的都市意象。Diameter difference of cross section
斷面直徑差In order to research product properties of the cross wedge rolling ( cwr ), a series of rolling experiments have been carried out on two - roller cwr under the condition of considering the variation of the original diameter, deformation temperature, area reduction and heat treatment methods and so on
摘要為了研究楔橫軋條件下工件的性能，在考慮原始棒料直徑、變形溫度、斷面收縮率以及工件軋后熱處理狀態等的基礎上，利用二輥楔橫軋機進行了系列楔橫軋軋制實驗。. tapered and reduced cross section retaining rings inch series ; addenda
錐形的縮徑橫斷面擋圈Type selection of shield machines for large cross - section underground railway tunnel on straight rail transit line in beijing
北京鐵路直徑線大斷面地下隧道盾構機選型研究In the paper, the flexural river distribution, flexural radius, central angle and flexural coefficient at middle reaches of huaihe river are analysed statistically, and the cross - section of river is prelimary analysed
摘要文章著重對淮河中游的彎道分佈及彎曲半徑、中心角、曲折系數進行了統計分析，並對彎道的斷面形態進行了初步探討。Compared with the traditional method, the digital image processing method has many advantages in measuring the deformation of soil specimen in triaxial test, such as higher accuracy, non - contact measuring process, and undisturbed specimen. it is valid to measure the deformation in large scale. it can select the section of specimen freely to measure the axial and radial deformation directly
應用數字圖像測量技術量測三軸試驗試樣的變形，有許多傳統測量方法不能比擬的優越性：較高的變形測量精度；非接觸式變形測量，不擾動試樣，不干擾試樣的變形；適用於三軸土樣的大變形測量；可以任意選擇測量斷面，實現三軸試樣軸向變形和徑向變形的直接測量；可以在試樣變形測量的同時用圖片的形式記錄三軸試驗的全過程，便於試驗結束以後對試樣變形的重新分析和研究。With prestressed rolling mill of the middle steelworks of taiyuan iron and steel limited group company as the researched object, this article analyze the existent questions and research the initial stress of prestressed rolling mill and computer control system, analyze the design thought of prestressed rolling mill and clarify the relationship between the dimensional precision of rolled material and the rigidity of base of rolling mill and the main method to increase the rigidity of base of rolling mill, analyze how to confirm the rigidity, sectional area of handle and post, and pretightening force, put forward the viewpoint that the key to assure great rigidity is to assure that the remnant initial stress is always positive during rolling, and develop intelligent control system with plc as the core on the basis of the former research to assure that the remnant initial stress is always positive during rolling
本文以太鋼集團公司中型型鋼廠預應力軋機為對象，分析了該廠預應力軋機所存在的問題，對預應力軋機的預應力以及微機控制進行了系統研究；分析了預應力軋機的設計思路，闡明了軋材尺寸精度與軋機機座剛度的關系及提高軋機機座剛度的主要途徑；分析了預應力軋機設計過程中預應力軋機的剛度、預緊拉桿和機架立柱斷面積及預緊力的確定；提出了預應力軋機保證高剛度的關鍵就是「確保軋制過程中，殘余預應力始終大於零」的觀點；在前述研究的基礎上開發了以可編程邏輯控制器為核心的智能監控系統，以確保「軋制過程中，殘余預應力始終大於零」這個要求。It can forecast flood real - timely and a course of any prospective flood. simulation model of runoff regards a drainage area as a system, simulating how one rainfall comes into being runoff in a basin. the import of system is rainfall, and the export is runoff
本文洪水預報採用產匯流模擬模型可以模擬任一時刻任一斷面的徑流量，對洪水進行實時預報，系統的輸入是降水量，輸出為流域出口的流量過程。分享友人