真空加壓法 的英文怎麼說
中文拼音 [zhēnkōngjiāyāfǎ]
真空加壓法
英文
vacuum pressure processes-
With the aid of baffle movement, a technique named masking pretreatment and the method of vacuum deposition have been used to fabricate the ag - o - cs photoemissive thin films with internal field - assisted structure for the first time. the internal field - assisted photoemission characteristics of ag - o - cs thin films show that the photoelectric sensitivity is increased when the internal electric field is applied to the thin films, which indicates that the electric field has been effectively provided to the thin films by the above - mentioned internal field - assisted structure. such an enhanced photoemission is attributed to the variations in energy - band structure of ag - o - cs thin films, and which are considered to induce the lower - energy electrons to participate in the photoemission
通過掩膜預處理和擋板轉移技術的配合，利用真空沉積方法首次制備了內場助結構ag - o - cs光電發射薄膜。 ag - o - cs薄膜內場助光電發射特性測試結果表明，該方法能夠有效地實現ag - o - cs薄膜體內電場的加載與表面電極的引出，薄膜光電靈敏度隨內場偏壓的增大而上升。 ag - o - cs薄膜在內場作用下的光電發射增強現象與薄膜體內能帶結構變化低能電子參與光電發射等物理機制有關。This dissertation introduces the necessity, mechanism and developing of the vacuum - heaped load combining precompression in the consolidation of the soft highway foundation
本文闡述了用真空堆載聯合預壓法加固軟土路基的必要性、機理和發展現狀。This paper emphasize study the seepage of vacuum - heaped load combining precompression., deduce the drainage quantity computation formula for stage loading in soft soil. an example show that the results of calculation are in good agreement with the measured value, this explain that the formula is rational
本文重點對真空堆載聯合預壓法的滲流進行了研究，得出了在分級加荷下軟土地基滲流量的計算公式，算例表明其計算值與實測值較吻合，說明所建模型是比較合理的。Based on the terszige and biot theory, initially analyze the economical of this experiment, directly save investment 22 % after compute. after that, computing the settlement of highway foundation, comparing the computing and survey value, the predict formula of vacuum - heaped load combining precompression for designing, this formula show that the distortion law of consolidation progress. at the same time, based on the position and room experiment, analyzes the intension transformation in soft soil and criteria of stabilization control
在太沙基和比奧固結理論的基礎上，先分析了此次試驗的經濟性，經核算直接節約投資22 ，經濟效益十分明顯；隨后對真空堆載聯合預壓法加固軟土路基的沉降量進行了估算，並與實測值作對比分析，得出了真空堆載聯合預壓下的沉降量估算公式，能反映「真空」加固過程的變化規律；同時根據現場和室內試驗，分析了軟土強度的變化，以及給出並驗證了工后沉降控制標準。Experimental study on mechanism of reinforcing soft foundation of bridge head by vacuum combined with surcharge preloading
真空聯合堆載預壓法軟基加固現場測試研究The factors which influenced the process include the insulator ' s material, structure, the distribution of space electrical field, the way to deal with the surface, the characteristic of voltage waveform, pulse width etc. there are two kinds of theory for the vacuum surface flashover : secondary electron emission avalanche ( seea ) and electron triggered polarization relaxation ( etpr )
影響該過程的因素包括絕緣材料結構、空間電場分佈、表面處理方法、所加電壓特徵，脈沖寬度等。研究真空表面閃絡過程有兩類理論：二次電子發射崩潰（ seea ）和電子引發極化鬆弛（ etpr ） 。In order to search after its applying to expressway roadbed improvement, this paper studied consolidation characteristic and distortion law hi soft soil under positive and negative action, introducing parse explain and numerical calculation theory. additionally, based on locale experimentation, the design and construction method of vhlcp was implemented and its reinforce effect and economical character was estimated. testing indicated that the groundwork ' s intensity have increased 97 %, silt soil have vanished and outlay have saved 39 %
根據現場試驗，確定了適合於高速公路工程要求的真空堆載聯合預壓的設計和施工方法，並分析評價了其加固效果和經濟性，試驗表明：應用真空堆載聯合預壓后，地基強度平均提高了97 ，地基中淤泥質土已消失；與粉噴樁加固地基相比，節省經費39 。How many pumps were turned on should be based on the dynamic design according to project target. and how many pumps should be in operation in standard shut off procedure. it was approved that although the theoretical boundary of decline of groundwater level is 10m, the actual boundary is only about 6m
提出了一些與真空預壓加固地基設計相關的概念和處理方法，如定義真空預壓加固區場地形狀系數，提出按加固土體體積來確定射流泵數量、根據工程需要動態設計開泵量、增加停泵標準中對開泵量的規定等設計思想等，論證了真空預壓加固地基時地下水位下降的理論極限深度為10m ，而實際極限深度約為6m 。Based on the results of testing site, some problems of vacuum preloading was analyzed by plane strain finite element method. the relative stable seepage velocity field can be produced with the pumping time. the depth of negative pore - water pressure transferring increases with the pvds length
最後，對真空聯合堆載預壓的施工工藝進行了研究，提出了在真空聯合堆載預壓的中期，出水量已相對較少，可適當減少開泵量，並可採用停抽結合的變真空能量法，在不影響加固效果的前提下，可以大大節省用電量。Heater adopts high quality stainless steel, alloy heating wire, electrical melting mgo powder etc. to make the heating elements after passing advanced technology such as coiling wire, shrinking tube, removing humidity and sealing etc. the connection between flange and heating tube adopts hydrogen arc welding and vacuum lead welding to guarantee the heater without leakage under high voltage
加熱器採用優質不銹鋼管合金加熱絲電熔氧化鎂粉等材料，經繞絲縮管排潮封口等先進的生產工藝製造而成的發熱元件法蘭與電熱管的聯接採用氬弧焊及真空釬焊，保證了加熱器在高壓下的不滲漏。For example, the condenser algorithm considered the trouble condition such as the leak of tube, fail of seal in vacuum system, the lower shaft sea - ting steam pressure, pollute of tube, the high water level of hot - well. the heater algorithm considered the trouble condition such as the leak, pollute of feed - water pipe and high water level of heater
如凝汽器演算法考慮了銅管泄漏、真空系統密封不嚴、軸封蒸汽壓力低、銅管結垢污染、熱井水位過高等故障項目，加熱器演算法考慮了給水管道泄漏、給水管道污染、結垢、加熱器水位過高等故障項目。Based on the former research, several works in this paper is listed as follow, which is studied by experiment research, theoretical analysis and numerical calculate : firstly, based on local observation and laboratory experiment result, consolidation mechanism of vacuum - surcharge preloading is analyzed form typical mechanics and microstructure seepage factor. a great deal of observed dada is employed to analyze the deformation characteristics of soil after being treated and variation law of pore water pressure
本文在前人工作的基礎上，通過試驗研究、理論分析、數值計算等手段主要進行了以下幾方面地工作： （ ）分析了大量現場觀測成果及室內外試驗資料，從經典力學和微觀滲流兩個角度解釋了塑料板排水真空-堆載聯合預壓法加固軟基機理，總結了該法加固的土體變形特點、孔隙水壓力變化規律。This paper presents the effects of some features on the productivity of raw c60 materials, such as distance and approaching speed of electrodes, helium partial pressure and arc current etc. then we separate and purify the raw materials and obtain pure solid c60 of 99. 9 % and compare the purification efficiency and effect of different fluxion phase and fixed phase and discuss the effects of the experimental conditions, such as the depositing speed, the type of the substrate, the surface structure of the substrate and the temperature of the substrate. finally, we use xps, afm, ultraviolet, infrared and raman to analyze the component, structure and feature of the films qualitatively and quantitatively
本文首先研究了氦氣分壓、弧電流大小、電極間距以及電極推進速度等實驗條件對制備c _ （ 60 ）粗品產率的影響；接著選用柱色譜法分離提純得到了純度大於99 . 9的c _ （ 60 ）固體，比較了不同流動相和固定相的提純效率和效果；然後採用自己改進后的真空鍍膜機，利用電阻式加熱蒸鍍方法，得到了純c _ （ 60 ）薄膜和不同摻雜比的銀摻雜薄膜；探討了沉積速率、襯底種類、襯底表面結構以及襯底溫度等實驗條件對薄膜結構的影響；最後通過xps ， afm ，紫外，紅外，拉曼對薄膜的成分、結構和特性作了定性和半定量分析。The two - dimensional axisymmetric subsonic - transonic - supersonic flow in an experimental arcjet thruster is simulated numerically using flux vector splitting method. the profiles of density, velocity, temperature, pressure and mach number can be obtained by the computation. the computation grid and some computed results are given here. the test equipment such as power supply system, ignition system, propellant supply system, arcjet thruster, thrust measuring device and vacuum system are introduced briefly. some working phenomena of the arcjet are observed and discussed. three different kinds of instability appeared in the process of the experiments. except some important parameters are measured, it is found that the operating stability of argon is better than that of nitrogen
對一實驗電弧加熱式發動機二維軸對稱亞跨超音速流動進行了數值模擬，所採用的方法是矢通量分裂演算法.通過計算可以得出密度、速度、溫度、壓力和馬赫數的分佈.給出了計算所使用的網格和一些計算結果.簡要介紹了實驗所使用的設備，如電源系統、點火系統、推進劑供給系統、電弧加熱式發動機、推力測量裝置和真空系統.對所觀察到的一些工作現象進行了討論.有三種不同的不穩定性出現于實驗過程.除了所測量的一些重要參數，通過實驗發現氬比氮工作更穩定Theory and applicable condition of soft clay foundation consolidated by vacuum precompressed method
真空預壓法加固軟粘土地基的理論與適用條件In recent years, vacuum preloading is extensively used to treat soft clay ground, whereas the development of the theoretic study in vacuum preloading cannot follow the progresses in engineering, which has limited the progress and application in engineering practice
目前有關真空預壓加固地基的理論研究落後于工程實踐，制約了該工法的進一步發展和工程應用，有必要對此進行系統的研究。The application of preloading method combing vacuum with stack - load to the consolidation of soft clay
真空聯合堆載預壓法加固軟土地基的應用On the basis of layered method, a method to calculate the consolidation settlement of vacuum preloading was deduced
在分層總和法思想基礎上，提出了真空預壓加固地基固結沉降計算方法。Fundamental equations of seepage and consolidation analysis of vacuum preloading were generalized. basic process of vacuum preloading analysis using fea method was introduced
總結了真空預壓加固地基滲流計算和固結計算的基本方程，介紹了採用有限元方法進行真空預壓加固地基固結計算的基本過程。There are some developments of improvement principle, construction techniques and design theory, but there are more questions to solve such as the depth of improvement, the change of underground water, difference between vacuum preloading and surcharge preloading, effect of vacuum preloading to the environment, computation method, and so on. this status limited the more application and development of these two methods. more and more researchers " attention in the world focuses on these questions
如真空預壓法的加固深度、真空預壓區地下水位的變化情況及真空預壓和堆載預壓加固效果的差別、真空預壓對周圍環境的影響等問題以及缺乏簡便實用的真空預壓設計計算方法等，因此制約了該方法的進一步推廣和應用，已引起國內外學術界和工程界的廣泛關注。分享友人