high specific speed 中文意思是什麼

high specific speed 解釋
高比轉速
  • high : adj 1 高的〈指物,形容人的身高用 tall〉;高處的;高地的。2 高級的,高等的,高位的,重要的。3 高尚...
  • specific : adj 1 特殊的;特有的;特定的,專門的。2 明確的,具體的。3 【生物學】種的;【細菌】專性的。4 【醫...
  • speed : n 1 快,迅速。2 速率,速度。3 (汽車的)變速器,排擋。4 (膠片,照相紙)感光速度。5 〈古語〉興隆...
  1. The method of obtaining high concentration of na2feo4 solution by quick electrolysis mainly contains four aspects : adoption of either a diaphragm or an ionic membrane electrolytic cell in which a thin anodic cell lying between the two cathodes, ( 2 ) using an iron anode that has larger specific surface area, ( 3 ) keeping suitable concentration of naoh in the anodic cell, adoption of lower current density and higher electrolyzing speed. the practical technique parameters follow a s below : the naoh solution of 14 - 16mol / l, the temperature of 303 - 308k, the surface anodic current density of 300a / m2, the unit electrolyzing speed of efficiency larger than 6. 0a / l

    快速電解獲取高濃度na _ 2feo _ 4溶液的方法,主要包括四個方面:採用兩陰極室夾一厚度較小的陽極室的隔膜(或離子膜)電解槽;使用比表面積較大的鐵網陽極;保持陽極室中有適宜濃度的濃naoh溶液;採用較低的電流密度和較高的電解速度。具體工藝參數是: 14 16mol / lnaoh溶液、溫度303 308k 、表觀陽極電流密度300a m ~ 2 、有效單位電解速度6 . 0a / l 。
  2. After analyzing the key technique of sprint - wiggling motion, specially analyzing the feature of hipbone motion of sprint - high - speed swing and level motion of having the hip as the axle in process of, the author considered that developing swing specific power be the first and developing general power be the second in power training of sprint surrounding tightly the power of groups of muscles of swing motion, and on the basis of initiatively developing muscle power of hip flexor and the equilibrium and harmony of upper limb power and lower limb power to improve the sprint technique, finally the author afforded the according means of swing specific power in training of sprint

    摘要通過對短跑技術擺動動作的分析,特別是對短跑過程中髖部動作以髖為軸的高速擺動平動運動的特徵分析,認為短跑力量訓練應以發展專項擺動力量為主,一般力量訓練為輔,緊緊圍繞擺動動作的肌群力量著手,在優先發展髖部屈肌肌群力量與上下肢力量均衡協調的基礎上,改進短跑技術,並提供了短跑擺動專項力量訓練的相應手段。
  3. Quality of service ( qos ) - specific performance guarantees for cable modem and other high - speed services

    服務質量-有線電視數據機和其他高速服務的具體性能保證。
  4. The roto - jet pump is a new kind of very low specific speed pump which is developed in recent years. it is always used in carbin black, food production, chemical industry and deep well mining system to supply the steady outflow with low flux and high pressure

    旋轉噴射泵是近些年才發展起來的一種極低比轉數泵,主要用在碳黑、食品、化工以及深井采礦系統中用以提供小流量高水頭的穩定出流。
  5. This demand can only be supported by mass production processes that require specific material properties : technyl nylons allow fixation part manufacturers to downsize their production costs by lowering cycle time. technyl high crystallisation speed facilitates fast cycled injection moulding processes

    這種要求只有在對材料性能有特殊要求的成批生產過程中才能得以體現:泰克尼尼讓緊固件生產廠商得以通過縮短成型周期來降低生產成本。
  6. This paper elaborates the parameters selection of the 700mw turbine for laxiwa power station located upstream yellow river, which is coming into construction soon. through statistical calculation of specific speed for turbines with large capacity, high operating head in domestic and oversea power station, utilizing turbine homologous theory. adopting regression statistic calculation method, it has got specific speed statistic equation., the demonstration of primary parameters selection, and the primary target parameters suitable for laxiwa power station

    本文針對黃河上游即將開工建設的拉西瓦水電站700mw水輪機的參數選擇進行了研究,通過對國內外的大容量、高水頭水輪機的比轉速統計計算,利用水輪機的相似理論,採用回歸統計計算方法,統計出了比轉速統計方程,並進行了水輪機主要參數選擇論證,提出了適合拉西瓦水電站水輪機的主要目標參數。
  7. It is a vane pump with high head, small flow and low specific speed, which is smaller, flight and simpler in structure than positive displacement pump mulfistage centrifugal pump, and may handle liquid of high gas or steam content

    該泵是一種高揚程,低比速的葉片泵,比容積式泵和多級離心泵體積小、重量輕、機構簡單等優點,並可以輸送氣體或蒸氣含量較輕的液體。
  8. The solid - propullant ducted rocket, which combines the advantages of solid propullant rocket and ramjet propulsion, is a new kind of combined propulsion system. it offers considerable advantages for missile propulsion, such as high specific impulse, high speed, light weight, long range, high maneuver and simple structure. as the major direction of the propulsion system for supersonic missile, the ducted rocket has good prospects

    它將固體火箭技術和沖壓技術有機結合在一起,具有比沖高、速度快、重量輕、射程遠、機動性能好和結構簡單等諸多優點,最大限度地滿足了新一代導彈對其動力裝置提出的要求,是超聲速導彈動力裝置的一個主要發展方向,有著廣闊的研究前景。
  9. With the accumulation of product development experience in the last years, axcen photonics corp can provide the clients the high quality, high coupling - efficiency and cost - effective osa products. the products include sc - type, lc - type and pigtailed - type osas with the speed ranging from 155mbps to 2. 5gbps. in order to meet the specific request for high power and high coupling efficiency osas, axcen photonics corp also can offer the customized service to this kind of products

    創威光電目前亦可提供客戶光學次模組封裝的產品及服務,藉由本公司技術研發人員過去多年來累積的開發經驗,本公司已可為客戶提供高品質高耦合效率及具市場競爭價格的光學次模組產品,其產品包括: sc - type , lc - type及pigtailed - type光學次模組封裝,就傳輸速率而言,目前創威光電可提供從155mbps至2 . 5gbps等不同速率的產品,以迎合顧客需求,另外,本公司亦可提供客制化,特殊規格,符合高功率,高耦合效率要求之元件封裝。
  10. The increasing - flow design method is presented on superlow - specific - speed high - speed centrifugal pump in this paper

    闡述了超低比轉數高速復合葉輪離心泵的加大流量設計方法,並給出了兩個設計實例。
  11. A new type of very low specific speed pump ? roto - jet pump is presented for low flowrate and high head transportation, which is introduced at the end of the thesis

    論文最後主要研究了一種隸屬于極低比轉數離心泵范疇的新型泵? ?旋噴泵,它是一種新型的石油化工用泵,具有流量小、揚程高、流量揚程曲線平緩的特點。
  12. First super - low specific - speed centrifugal pump has a long and narrow flow passage for its high head and low capacity, and the power absorbed by disc friction is too high, so the efficiency is very low ; secondly the diffusion of flow passage is so high, that the reserved flow often emerges at the inlet and outlet of impeller. therefore the h ~ q characteristic curve is often hump - shaped, and at the low - capacity operating condition the instability often occurs ; thirdly the centrifugal pump at high - capacity operating condition is easy to overload because the n ~ q curve appears a rising trend

    首先由於它的揚程較高、流量較小,所以它的流道狹長,圓盤摩擦損失較大,效率相對較低;其次由於它的流道擴散較嚴重,易在葉片進口產生迴流和在出口產生脫流,揚程流量特性曲線易出現駝峰,在小流量工況下易產生不穩定現象;第三,由於其功率流量曲線呈現上升趨勢,在大流量區運行時電機易過載。
  13. Mac 5ghz supplement to standard for information technology - telecommunications and information exchange between systems - local and metropolitan area networks - specific requirements - part 11 : wireless lan medium access control and physical layer specifications : high speed physical layer in the 5 ghz band

    信息技術補充標準.系統間電信和信息交換.局域網和城域網.特殊要求.第11部分:無線lan媒體訪問控制
  14. In flexible multibody systems, the rotation of some parts with little specific gravity at high speed always cause the phenomenons of dynamic stiffening. at this time, the effect of elastic movement of parts on dynamic behavior of systems ca n ' t be ignored

    在柔性多體系統中,很多部件的比重小且在系統工作時處于高速的旋轉狀態,經常導致動力剛化現象的發生,此時部件的彈性運動對系統的動力學行為有著不可忽略的影響。
  15. Abstract : the effect of turbine characteristic on stable sectional area of surge tank can be expressed by the synthetic characteristic coefficient of turbine, it shows the effect of turbine efficiency. based on the analysis on the variation of the characteristic curve for middle or high specific speed turbine, this paper demonstrates that the largest stable sectional area of surge tank is not dependent on the lowest water head of hydroelectric plant but the design head

    文摘:通過理論推導,研究了水輪機綜合特性系數對調壓室穩定斷面的影響,即水輪機運行中不同工況點效率的相對變化對調壓室穩定斷面的影響.得出了最危險的調壓室穩定斷面取決于設計水頭,並通過實例得到驗證
  16. Proximity access enables broadband users to access a nearby cache when they want to access the cache content of a specific stream media service or that deployed by the cdn to a remote node. that is to say, it directs user access to a relatively near cache that operates normally so that the user can be served directly by an edge cache. this allows the saving of bandwidth and alleviation of pressure on the core server as well as the acceleration of the access to medium and high speed stream media

    實現寬帶用戶在訪問特定的一些流媒體服務或者是已經被cdn部署到邊緣節點上的cache內容時,能夠就近訪問cache ,也就是能把用戶的訪問定向到離用戶比較近而且運轉正常的cache上去,由邊緣的cache直接為用戶提供服務,從而做到節省帶寬和減輕對核心服務器的壓力,以及加速對中、高速流媒體的訪問。
  17. With the gradual built of three - gorges hydraulic power station and the execution of the project " electric power transmission from west to east ", the hydroelectric resource is being developed at top speed and the hydroelectric occupy more and more specific weight. the continuous completion and commissioning of large hydraulic power station, as well as the continuous increasing of extra - high voltage and long distance power transmission system, deteriorate the stability control problem of hydro - electricity system

    隨著三峽水電站的逐步建成和「西電東送」計劃的實施,我國的水電開發進入了高速發展的時期,大型巨型水電站不斷建成投運,超高壓遠距離輸電系統不斷增長,水電在我國電力系統中所佔比重越來越大。
  18. Beacause apon ’ s efficiency is low and epon could not provide quality assurance for real - time services, network inspection, operation management and network control, gpon was proposed by fsan in september 2002, which can provide gigabit speed, high efficiency, transparent transmission of multi - services and specific quality of service. at present, the gpon standards, g. 984. 1, g. 984. 2, g. 984. 3 and g. 984. 4, have been established by itu - t

    Fsan組織考慮到apon的低效率和epon的無法對傳送實時業務提供質量保證、缺乏電信級的網路監測和業務管理等方面的不足,於2002年9月提出了具有gbit / s級的高速率、高效率,支持多業務透明傳輸,能夠提供明確的服務質量保證和服務級別,具有電信級的網路監測和業務管理能力的光纖接入網gpon 。
  19. In this article, we study the implemetation of fpga for elliptic curve digital signature algorithm. based on number thesis 、 abstract algebra and complex thesis , integrated information theory 、 cryptography and some specific relevant algorithm , we ascertain the implementation of ecdsa for hardware project : according to the design idea of hiberarchy and modularization, we adopt very high speed ic hardware description language ( vhdl ) as design input and simulate the design in every level and every model for the correct of the fundamental design. after finish the top design, we perform the whole simulation. then , we carry out the timing simulation after the logic synthes and layout

    本文從實際應用出發,研究了橢圓曲線數字簽名演算法的fpga的實現:以基本的數論理論、抽象代數和復雜度理論為依據,結合信息論、密碼學的一些知識以及一些具體的相關演算法,確定了ecdsa的硬體實現方案:按照層次化、模塊化的設計思想,採用硬體描述語言vhdl作為設計輸入進行ecdsa的硬體設計;在每個設計層次和每個模塊都進行了模擬驗證,得以保證底層設計的正確性。在確保每個模塊的設計正確后,完成對電路的頂層設計,進行總體的模擬。
  20. Flow pulsation of a specific gear pump is analyzed and the results are given. according to the testing requirement of pump pulsation, the measurement device of the testing flow pulsation, based on iso 10767 - 2 measurement standard, the measurement device of flow pulsation testing is built. high speed dynamic pressure transducer is used to record the pressure pulsation in the pipeline

    然後根據齒輪泵流量脈動的檢測要求,採用iso10767 - 2測試方法,搭建了齒輪泵流量脈動測試裝置,採用動態壓力傳感器,對齒輪泵系統進行了壓力脈動測試,利用壓力脈動與流量脈動的比例關系,對齒輪泵流量脈動分析結果進行了驗證。
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