功熱比 的英文怎麼說
中文拼音 [gōngrèbǐ]
功熱比
英文
work / heat ratio-
It focuses on the theory of the mineral functional materials " improving the anti - chloride permeability and the chloride binding. the main achievements of this article include : 1 ) use the technology of xrd, sem, bet, laser particle size distributor etc to test the component, the construction, particle size distributor, specific surface etc of micro - silica, ultra - fined slag, high quality fly ash, meta - kaolin clay, four types of the mineral functional material, theoretically analysis the functions which the four mineral functional minerals act on cement concrete, namely pozzolanicity effect, filling effect, micro - aggregate effect, surface adsorption effect and so bring into play the affect of plastification, lowing of temperature, reinforcement, improvement of durability. base on this analysis we can conclude that the proper diameter of the mineral functional material is 5 m - 15 m, that is blain fineness 4500cm2 / g - 7500cm2 / g
本論文的主要成果包括以下幾個方面： （ 1 ）採用xrd 、 sem 、 bet 、激光粒度分析儀等多種測試手段，探明了以硅灰，超細磨粒化高爐礦渣，優質粉煤灰及偏高嶺土超細粉等4種超細礦物功能材料的組成、結構、粒度分佈、比表面積等基本性質；從理論上分析了礦物功能材料在混凝土中的4種效應，即火山灰效應、填充密實效應、微集料效應、表面吸附效應，並由此發揮出增塑、溫峰削減（降熱） ，增強及耐久性改善等作用；通過相關理論分析，推導出礦物功能材料的合理粒徑范圍在5 m 15 m ，即勃氏比表面積為4500cm ~ 2 g 7500cm ~ 2 g 。Compared with traditional mechanical and optic gyros, hrg has such advantages as no high speed circumvolving or moving parts in structure, no warm - up time and short start - up time, wide signal band in frequency, low excursion noises, great endurance in over loading, nuclear radiation and short time power off, small bulk, light weight, low power cost and long life, which is suitable for space applications
與傳統的機械陀螺和光學陀螺相比，半球諧振陀螺具有如下優勢:結構上無高速轉子、無活動部件;不需預熱，啟動時間短;信號頻帶寬，漂移噪聲低;能承受大的機動過載;抗核輻射，並可經受短時間電源中斷的影響;體積小，重量輕，功耗低，壽命長，非常適合空間應用。Abstract : in the research of internal combustion engine, recordingin - cylinder pressure and temperature is an essential technique to study the thermal cycle of internal combustion engine. the combustion analyzer developed in this study will give both the measurements at sampling points per crank angle or sampling cycle, calculate and show the real time parameters which decide the working process of internal combustion engine, such as pressure accelerating rate, indicateed mean effective pressure, cycle - to - cycle variation, heat release rate, etc. compared with the imported congeneric products, the analyzer has many advantages such as chinese interface, low price, easy operateing, convenience in maintainance and easy upgrading
文摘:為了測錄內燃機缸內的壓力及溫度，開發了一種內燃機燃燒分析儀.該分析儀由國產高速數據採集卡及自行開發的控制軟體組成.它不僅能精確設置每度曲軸轉角內采樣點的個數和採集循環數，而且在採集過程中能實時計算和表徵內燃機工作過程的壓力升高率、平均指示壓力、循環變動率、放熱率等參數.經實際使用以及與國外產品相比表明，此分析儀具有全中文界面、價格低、操作簡單、使用維護方便、功能便於擴充等優點Recent experiments have succeeded in obtaining oscillations from the new system, with frequencies of 66hz and 23hz for the cases with helium and nitrogen as the working fluids, respectively. the traveling wave system is expected to be one of the good candidates as a driver for pulse tube refrigerator, leading to a thermoacoustically driven pulse tube refrigerator without any moving component
還利用deltae對環路部分進行了數值模擬分析，著重討論了系統的起振臨界溫度與臨界加熱功率、效率與加熱溫度的關系、噴射泵的作用以及不同工質（氮氣和氦氣）的比較等，得出一些有益的結論。In chapter two, we fabricated r - ni - fe / al2o3 nanocomposites successfully by using ball - milling mixing method plus hot - pressing process. meanwhile, their microstructures are characterized by x - ray diffraction ( xrd ) analyser, transmission electron microscopy ( tem ), field emission scanning electron microscopy ( fe - sem ) and brunauer - emmett - teller ( bet ). the results indicate that ni - fe particles are homogenously dispersed in the matrix in the composites
在第二章中，我們採用高能球磨混合方法加上熱壓燒結工藝，成功制備了ni - 20fe al _ 2o _ 3納米復合材料，並通過x射線衍射儀（ xrd ） 、透射電鏡（ tem ） 、場發射掃描電鏡（ fe - sem ） 、比表面孔隙儀（ bet ）對該復合材料的微結構進行了表徵。Firstly, the surface characteristic of polystyrene particle is changed from water detesting to water intimity by using special techniques and admixtures so mat the compound quality with inorganic materials is insured. secondly, the contradiction between the weight and strength is solved through optimizing the particle size and using composite fiber and the best heat conductivity is achieved under the condition that the necessary strength is met. in the research process, the author solved the problem of fiber dispersing in insulating materials so that the contraction of the material is controlled
課題研究中，首先採用特殊的改性工藝及外加劑實現對聚苯乙烯顆粒表面的成功改性，使其表面由憎水轉化為完全親水，確保與無機材料的復合質量；其次，通過採用優化骨料級配及使用復合纖維等措施解決了保溫材料的輕質與強度的矛盾，使保溫材料在滿足必要的強度的前提下，導熱系數降至最小；並且，課題研究中成功解決了纖維在保溫材料中均勻分散的問題，達到了抑制保溫材料收縮的目的；最後，通過採用復合外加劑、合適的膠凝材料及合理的配比等措施確保該保溫材料具有良好的和易性，滿足施工的要求。The master dissertation introduces passive correlative orientation system and base theory in signal dispose briefly in the first place. the system takes tv sound fm signal from tv satation signal. the power rate of tv station signal to sound signal is ten to one. in the case of submerged by mussy weave and machine ' s hot noise, dispersed target signal is feeble
系統採用電臺的電視伴音調頻信號，其中電臺信號與伴音信號功率之比基本為10 ： 1 ，並且目標散射信號較弱，一般情況下淹沒在雜波和機器熱噪聲之下，採用常規的脈沖檢測方法很難對遠距離的目標進行檢測，而以電臺直達信號作為參考與目標回波信號進行相關檢測；系統中信號的相關處理會產生旁瓣，而強目標的旁瓣會影響附近的弱目標檢測。Abstract : researches on unformaldehyde unironing finishing are summarized in this paper. functions and deficiencies of glyoralamido, water soluble heat reactive polyure thane, bishydroxyethyl - sulfoue, natural high precision chitosan, reactive organosilicon, amyloidosis epoxide, multiple carboxyl acid compound are also analyzed and compared
文摘:綜述了無甲醛免燙整理方面的研究，分析比較了乙二醛-酰胺類整理劑、水溶熱反應性聚氨酯、雙羥乙基碸、天然高聚物殼聚糖、反應性的有機硅、澱粉改性物、環氧類整理劑、多羧酸化合物等無甲醛抗皺整理劑的功能以及各種整理劑存在的不足Firstly. operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized. then, the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit. in this part, operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant. moreover. the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well
文中首先介紹了感應加熱電源的工作原理並綜述了國內外的研究現狀。接下來分析並制定了電源主電路的構成方案：在對比幾種功率調節方式的基礎上選擇了不控整流加斬波調壓作為直流部分。在這部分里，重點研究了一種軟開關buck變換器，通過分析各階段的工作原理說明了開關器件如何工作在軟開關狀態；對于逆變器部分，在比較了串、並聯逆變器優缺點的基礎上選擇了串聯諧振逆變器，並詳細分析了串聯逆變器的工作原理，提出了最佳死區的計算方法。This paper select the series - resonant inverter because it is more suited to high frequency power supply and it will be easy to enhance power capacity and enable the power supply to work on higher frequency if power is regulated in the rectifier. so uncontrolled rectifier and buck chopper constitute dc circuit is selected as rectifier circuit
並分析了感應加熱電源的各種調功方式，在對比幾種功率調節方式的基礎上，得出在整流側調功有利於高頻感應加熱電源頻率和功率的提高，選擇了不控整流加斬波器調壓作為研究對象。The numerical simulation of axisymmetric two - dimensional shock tube is studied, which has a conical convergent section, and its driving gas is the hot product of hydrogen oxygen detonation. finite volume tvd scheme is adopted and the mesh is local orthogonal. the primitive equations are euler s equations of multi - component flow. the new method of eliminating numerical oscillation at the interface of two materials is extended to two dimensions. the mechanical character of this shock tube is analyzed
對由前向爆轟產生驅動氣體並具有局部錐形收縮截面的軸對稱激波管利用兩相常比熱完全氣體的歐拉方程組和有限體積tvd格式在局部正交的網格上進行了二維數值模擬。將消除兩種介質界面處數值振蕩的新方法成功地推廣到二維情況。分析了該激波管的力學特性。Abstract : this paper studies the structure, function and realization of ceramic / metal gradient thermal barrier coatings dynamic design software by combining the conceptions of thermal barrier coatings ( tbcs ) and functional gradient materials ( fgms ). through a typical example, it compares and analyses the simulation results of temperature field in the multiplayer gradient cylinder model calculated by analytical method, finite difference method and finite element method
文摘:結合熱障塗層和功能梯度材料的概念，研究陶瓷/金屬梯度熱障塗層動態設計軟體的結構與功能及其實現過程.通過具體的例子，對多層圓筒模型的溫度場的解析解、差分解及有限元解的模擬結果進行了比較及分析I went under the knife on tuesday after breaking the metatarsal bone in my foot against spurs on new year ' s eve and the operation seems to have gone well
在新年的前日我在對熱刺的比賽中傷了我的跖骨，我現在已經做了手術了，而且手術看上去很成功。Moreover, we give a further discussion on the numerical value calculation of temperature distribution. the main problem when we design the high duty - cycle high power laser diode array we face is the large amount of heat during its operation. so we change the proportion of some ingredients and the concentration of the dopage to gain high quality iii - v material
在激光器陣列的設計過程中，針對大功率激光器嚴重的產熱問題，尤其是高占空比工作時，會有更多的功率轉化為熱的現象，我們改進晶元材料的配比、摻雜，提出適應高占空比工作的器件版圖結構。Kapton is used extensively on spacecraft primarily as flexible substrates for lightweight, high - power solar arrays because of its inherent strength, temperature stability, excellent insulation properties, ultraviolet ( uv ) stability and infrared ( ir ) transparency. however, polymeric material undergoes severe degration after being exposured on atomic oxygen ( ao ) in low earth oribit ( leo )
聚合物kapton由於具有較高的比強度，優越的熱穩定性、絕緣性、紫外線輻射穩定性及紅外線穿透功能，是航天飛行器常用的材料，但由於空間環境中的原子氧對這種材料造成極大的損害，大大限制了這種材料在空間環境下服役時間。Much works has been distributed to the development of a vacuum system to simulate the outer space and a measurement system to test the arcjet performance. ignition experiments in various operational modes have been done with argon as propellant. macroscopical working parameters including thrust, mass flow rate, voltage, current, inlet pressure and vacuity are obtained by the test measurement system and actual performance parameters including specific impulse, thrust efficiency, ratio of thrust and power and ratio of power and mass flow are calculated
以氬氣作為推進劑，在不同工況下進行點火實驗，測量獲得了其工作推力、電弧電壓和電流、推進劑流率和弧室壓力等宏觀參數，得到了不同實驗條件下其工作的實際比沖、推力效率、推力/功率比以及比功率等性能參數，分析了推進劑質量流率、電弧功率、電弧加熱發動機電弧室結構尺寸等因素對其性能的影響，為數值模擬研究和實際的低功率電弧加熱發動機優化設計及研製提供了實驗基礎。At present, arcjet has been the highlight of investigation and application because of its high thrust density, high ratio of thrust and power, preferable specific impulse, better system successiveness and reliability
電弧加熱發動機以較高的推力/功率比、推力密度、中高的比沖、良好的系統繼承性和可靠性等特點，已經成為當前國際研究和應用的熱點。Arcjet is one of the highlight of electric propulsion investigation and application because of its high thrust density, high ratio of thrust and power, preferable specific impulse, better system successiveness and reliability
作為電推進的一種方式，電弧加熱發動機以較高的推力/功率比、推力密度、中高的比沖、良好的系統繼承性和可靠性等特點，成為當前國際研究和應用的熱點。This thesis gives a fundamental quantitative analysis of the cycle of recuperative gas turbine cogeneration with water injection and mainly discusses the influence of water injection ratio and pressure ratio on the specific power and the amount of heating
本論文對功熱並供回熱注水燃氣輪機熱力循環進行了基本定量分析。主要分析了注水率和壓比對比功和供熱量的影響。Arcjet, one type of electric propulsion, is high at specific impulse and ratio of thrust, and good in capability of propellant. thus it is being researched and applied in several countries
電弧加熱發動機就是電推進的一種，它具有較高的比沖和推力/功率比以及良好的推進劑普適性，已成為國際研究和應用的重點。分享友人