高度壓下量 的英文怎麼說
中文拼音 [gāodùyāxiàliáng]
高度壓下量
英文
reduction in height-
The research results show that when the fly ash content is under 30 %, the strength of rcc can be increased but the effect is a little ; and with the fly ash content increased the dry shrinkage of the rcc reduced straightly, and the abrasion resistance and freeze resistance increased obviously. ( 3 ) fly ash can increase durability of the rcc and under the experiment condition, the perfect mixing content is 30 %
試驗結果表明： （ 1 ）粉煤灰摻量小於30 %時能提高碾壓混凝土強度但影響度不大； （ 2 ）隨著粉煤灰摻量的增加，碾壓混凝土的干縮呈直線降低，且抗磨性和抗凍融能力明顯提高； （ 3 ）粉煤灰能有效提高碾壓混凝土的耐久性，且在試驗條件下的最佳摻量為30 % 。Secondly, based on the microbeam analytical technique, on the one hand, through investigating the characteristic of major elements in the mantle minerals the author acquired the static information from mantle ; on the other hand, through multi - point analysis of a part of the minerals from mantle, the auther got dynamic information from mantle. finally, generalizating the fruits of this study and predecessors, the autor holds that the constituents of lithospheric mantle possibly includes spinel lherzolites, clinopyroxenites, websterite, dunite, harzburgites, garnet lherzite, phlogopite lherzite, eclogites, clinopyroxene megacrysts ; compared with east china and north china platform, the research field mantle shows the characteristics of higher degree of partial melting processes and more depleted mantle ; the. upper mantle beneath north hetian area is heterogeneous, with a tendency of deficit in a12o3 and lree from kaliyang in west hetian to the river basin of kalakshi river and yulongkashi river ; the subduction of the crust beneath north hetian has ever occurred in geological history and caused the mixing of mantle - crust ; the depth of the origination of basaltic magmas beneath north hetian exceeds 73km ; the thickness of the lithosphere beneath the research area amounts to 204. 9km ; the mantle beneath north hetian has geological condtions for forming diamond deposits
最後，綜合本區幔源礦物和地幔巖石的特徵以及地球物理資料，得出如下結論：本區上地幔的物質組成有尖晶石二輝橄欖巖、二輝巖、單斜輝石巖、純橄欖巖、方輝橄欖巖、石榴石二輝橄欖巖、金雲母二輝橄欖巖、榴輝巖；與中國東部以及華北地臺上地幔相比，研究區上地幔具有富集主元素中相容元素和虧損其中的不相容元素的特徵，局部熔融程度較高；上地幔存在橫向和縱向的不均一性，從西部的克里陽到喀拉喀什河和玉龍喀什河流域， al和lree富集程度呈下降趨勢，不同來源的相同礦物中主元素的含量差異較大；地質歷史時期這里可能發生過地殼俯沖並產生殼幔混合作用；玄武巖漿的起源深度73km ；從幔源重砂礦物的溫壓估算結果，可以推斷出巖石圈厚度可達204 . 9km ；綜合巖石圈物質組成特徵、巖石圈熱狀態、地幔溫壓狀態、氧逸度以及幔源巖石和幔源礦物的化學成分，認為研究區具備了金剛石成礦地幔地質條件。Shock wave compression technique has play an important role in the understanding of the material composition thermodynamic state and physical properties of the earth ' s ulterior. in this article, the stabling of high - pressure phase of one of the main candidate materials of the earth ' s lower mantle ? enstatite ( mg0. 92, fe0. 08 ) sio3 were investigated through the experimented measurement of hugoniot equation of state, and together with thermodynamic calculation and analysis
本學位論文以沖擊壓縮技術為手段，從測量其hugoniot物態方程入手，結合高壓物理和熱力學理論分析，較深入地研究了下地幔中的一種主要候選組分頑火輝石（ mg _ （ 0 . 92 ） ， fe _ （ 0 . 08 ） ） sio _ 3在與下地幔大致相當的溫度壓力條件下的相態-鈣鈦礦型結構的相穩定性。The concrete with the a 28 days compressive strength of c60 can be produced by using suitably pulverulent coal - fired ash, the higher the quantity of pulverlent coal - fired ash mixed in concrete with 10 % - 20 % is, the higher the strength of concrete is. then, we carry out the studies on the technics properties that reflect the comprehensive properties of concrete. we find that the separating and excreting water of the concrete can be avoided efficiently when the pulverulent coal - fired ash and superplasticizer are used suitably, the higher the quantity ration of coal - fired ash and super plasticizer are, the higher the caving degree of the concrete is
在上述研究基礎上，對摻細化粉煤灰后混凝土的強度變化規律進行了分析研究，在適當配合比及高效減水劑的作用下，摻一定數量的磨細粉煤灰，在28天齡期可以配製出抗壓強度高於c60的粉煤狄高強混凝土；當磨細粉煤灰以10 - - 20不同的摻量分別摻入粉煤灰中時，粉煤灰高強混凝土的強度隨摻量的增大，各齡期強度均逐漸降低；在摻入8硅灰+ 10粉煤灰可使高強混凝土的各齡期強度都有很大增加，當單摻8粉煤灰時，混凝土的後期強度增加較快；粉煤灰混凝土必須加入高效減水劑遼十l彬技術人學碩十學位論文後j 」能達到高強的目的。Soakage of concrete and penetration length at different water pressure and pressure maintaining time are tested, and the results show that soakage at a water pressure is not linear relation with time. water soaking rate of concrete is reducing with time, and soaking mainly happens within original one hour and increases slowly in subsequent 6 hours
通過對水壓法下混凝土的吸水量及滲透高度與恆壓時間及水壓力的關系的研究發現:混凝土在一定水壓力下的吸水量與時間並不是線性關系，而是隨著時間的變化，吸水量的增長率減小，吸水量主要取決於前1h ，而在6h后增長極為緩慢。In different in terne die travel, the metal flow characterize in warm extrusion forming processes and the affection for the flow of metal stage which made by the difference between the blank bottom altitude and the axial direction limiting size in warm extrusion forming technique have been analysed we have gotten the equivalent strain field and the velocity field and other field variable that the blank in different in terne die travel and the die travel - load curve. at the same time, we have analyzed the contributing factor for the oil pump stator forming process optimized and achieve thereasonable die parameter for the war m extrusion forming finally, the optimized technics parameters were used into pilot production, then the qualified oil pump stator forging were produced, the analog results were compared with those of pilot production
論文具體分析研究了不同成形工藝過程中金屬流動的特點，並對不同凸模行程下溫擠成形過程中的金屬流動特點、坯料連皮厚度（底部高度）與溫擠壓成形工藝中的軸向界限尺寸的差值對金屬變形階段的影響進行了分析，獲得了坯料在不同凸模行程下的等效應變場、速度場等場變量及凸模行程-載荷曲線，同時對油泵定子成形過程的影響因素等進行了分析，優化並獲得了合理的溫擠成形工藝及模具參數。最後，利用模擬優化獲得的各項工藝參數進行生產實驗，得到實際生產出的合格油泵定子件，並將模擬結果與生產實驗結果進行比較。When other factors are unchangeable, with the growing of the diameter of drip line and the distance of emitters, irrigation uniformity of trickle system is increasing. the face gradient of little irrigation district has complex effect on irrigation uniformity. in a word, we tries our best to make the face of little irrigation district flat in order to improve the quality of drip - irrigation system
灌水均勻度由某一因素決定，而其它因素不變的條件下，隨管徑增大，滴灌系統的灌水均勻度增大；隨滴頭間距增大，灌水均勻度也在增大；地形坡度對灌水均勻度影響比較復雜，為了提高低壓滴灌的灌水質量，土地必須整平。Since the departing process of fire work departing installation is a highly nonlinear transient dynamic process, it relates to many speciality field, and the characteristic of the material is very complex under the highly rate and highly pressure distortion, the design methods and the design formulae by experience which has been used for a long time are very limited, the facter which truly affect the departing process of fire work departing installation cannot been reflected in the design calculation, the structure modelling and optimization of the fire work departing installation is cannot been carried out by the traditional optimization method
由於火工分離裝置的分離解鎖過程是一個高度非線性的瞬態動力過程，涉及多個學科和專業領域，而且材料在高速高壓條件下瞬時性態十分復雜，長期以來所沿用的經驗設計方法和設計經驗公式的局限性很大，對火工分離裝置分離解鎖過程一些實際有影響的因素不能定量地反映到設計計算中來，採用傳統優化方法無法實現火工分離裝置的結構優化建模和計算。The main tests and researches are as following : to study the ac flashover characteristic of composite insulator in different icing states by imitating tests in multifunctional artificial climate chamber, and analyze the effect of ice amount and icing water conductivity on flashover voltage, put forward a flashover mechanism by analyzing the icing flashover process. to study the ac flashover characteristic of composite insulator in different altitude and icing states together by imitating tests in multifunctional artificial climate chamber, and mainly analyze the effect of altitude ( air pressure ) and ice amount on flashover voltage, and investigate the flashover mechanism. to investigate the effect of high altitude and icing on the hydrophobicity of composite insulators
本文主要進行了以下試驗研究： 1 ）在多功能人工氣候室里模擬不同覆冰程度下合成絕緣子的交流閃絡特性，主要分析覆冰量和覆冰水電導率對閃絡電壓的影響，並對其覆冰閃絡過程進行機理分析； 2 ）在多功能人工氣候室里模擬不同海拔高度和覆冰程度綜合作用下合成絕緣子的交流閃絡特性，主要分析海拔高度（即氣壓）和覆冰量對閃絡電壓的影響，並進行閃絡機理分析； 3 ）研究高海拔和覆冰對合成絕緣子憎水性的影響。Moreover, the resulted prediction model of foam size of the closed cell aluminum foam was verified by comparison to the experimental results from the foaming process at different foaming conditions, and the predicted bubble diameter is in good agreement with the experimental ones, the relative error distributes between - 5. 04 % and 6. 32 %
當入射空氣的壓強、氣流量，液面高度，出氣孔直徑增大時，氣泡直徑隨之增大；當出氣孔數量，液體粘度增大時，氣泡直徑減小，表面張力對氣泡直徑的影響可以忽略不計；靜態條件下液體表面氣泡直徑的預測值和實驗測量值符合得較好，相對誤差分佈在- 5 . 04 % ~ 6 . 32 %之間。According to non - newtonian fluid mechanics theory and mathematical method, conbined with plunger moving property, the hypothesize fluid is imcompressive, hydraulic radius of flow of liquid in crevice is very little, and it is laminar flow, the flow is treated fixed continuous flow at every instant position of plunger, equation of motion and boundary condition were set up in condition of concentric and eccentric of pump barrel and plunger
運用非牛頓流體力學理論和數理方法，結合抽油泵柱塞運動特點，假設液體為不可壓縮的，液體在縫隙中流動的水力半徑很小，呈層流流動，柱塞在每一位置的瞬間，流動做定常流處理，建立了泵筒與柱塞同心和偏心兩種情況下運動方程和邊界條件，引入無量綱坐標、無量綱速度和柱塞與泵筒偏心配合時的縫隙高度，並給出縫隙流流速、流量的解析解。Abstract : the stimulation treatment of & quot; loosening rock by the dilatancy of explosive waves & quot; is tested in the casing well 4242 for studying its result and its influence on casing. the result of the field test shows that this test is successful in technology, the oil production of the well is 4 times as much as that of it before the test ; the deformation of casing is local, and the result of the strength calculation shows that the deformation will not destroy casing
文摘:為了研究「壓脹松動」增產技術的增產效果和對套管的影響，在延長石油管理局子長油礦對4242井進行了現場實驗.該技術採用強動載波在地層深處疊加的方法，造成壓脹條件，松動巖石，增大近井帶滲透率，提高油井產量.施工后，該井產量增加為原來的4倍多.本次實驗工藝上是成功的，首先是按設計要求引爆了炸藥，其二是由於採取了保護措施，使套管變形局限在施工段處，不影響下泵，不影響油井生產;套管強度校核分析也證明了套管不會破壞.施工后地質效果明顯The optimized speed curve can bring a steady press - down dimension in the process of the ring rolling which could assure high quality products
優化后的芯輥進給速度曲線能保證輾擴過程中始終有理想的每轉壓下量，從而降低缺陷的發生，提高零件質量。At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency
在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。Due to the complexity of the structure and control of cycloconverter - type three - phase hf link inverter for soft - switching based on phase - shift - controlled full - bridge mode, a simple and optimized vvvf control strategy is proposed. this control strategy includes : produced pwm by space voltage vector ( svm ) and equivalent carrier frequency fe = 1 / te are introduced into the pdm control of the cycloconverter ; softened equivalent pwm wave is generated at the notches of hf voltage pulses ; the harmonious control between regulating pulse width by phase - shifted angle and regulating voltage of equivalent pwm is to minimize the harmonics content of output voltage of the inverter
西安理工大學博士學位論文針對這種前級移相全橋軟開關周波變流型三相高頻鏈逆變器結構和控制的復雜性，提出了一種實現簡單而整體優化的vvvf控制策略:將空間電壓矢量產生p姍的方法svm和等效載波頻率fe = 1 / te引入到周波變流器的pdm控制;按高頻電壓脈沖前後沿軟化等效p翎波;用移相調節高頻脈沖寬度和等效p姍調壓協調控制逆變器輸出電壓，在滿足輸出電壓條件下使諧波最小。Firstly, the comparation study between the wedge pressing and the contour forging has shown that the transverse deforming initiated from the surface of the preforms. when the superficies reached the moulding wall, the deforming moved downwards as the high - direction deforming increased, till the moulding chamber was full of stock ; the transverse deforming of the moulding pressing stock initiated from the center of the stock then surned into a drum - type. the distribution of the density and hardness of the high - direction indicated that the wedge pressing acquired a better ability of pressing penetration
首先對比研究了楔形壓制工藝與模壓緻密化工藝，發現楔壓坯料的橫向變形從上表層開始，當上表面與模壁接觸后，隨著高向變形量的增加逐步向下移動，直至坯料充滿模腔;模壓坯料的橫向變形從坯料中間開始，形成鼓形。高向的密度、硬度分佈表明楔壓比模壓具有更好的壓透能力。( 3 ) p and s wave velocity and dynamic & static modul of sand rock in huanhua basin are the first time measured using " mts rock physical parameter testing system under formation condition " of " state key laboratory of oil and gas reservoir geology and exploitation ". at the same time, relationship between seismic response and oil & gas is discussed and summarized
（ 3 ）利用「油氣藏地質與開發工程」國家重點實驗室mts巖石物性測試系統，首次對黃驊坳陷砂巖進行了高溫高壓下的縱、橫波速度及動彈模量的測定，對黃驊坳陷砂巖的地震響應與油氣關系進行了分析和總結。The paper mainly discussed the reasons of stress from liquid ammonia pressure vessel causing crack through examing data and experimental results and analysing relevant referential documents and materials, taking 1200 ammonia vessel ' s crack and leaking in a certain fertilization company as an example : there existed remaining welding, stress in the equipment ; there existed a stress decaying surrounding, i. e., moisture 0. 2 %, and temperature > - 5 with o2 or co2 inside ; the higher the intensity of raw materials, more possible it was to have stress decaying crack
摘要以某化肥公司1200氨冷器殼體開裂泄漏的失效分析為例，通過對檢驗數據和結果及有關文獻資料的分析研究，探究了液氨介質壓力容器產生應力腐蝕裂紋的原因：設備中存在較高的焊接殘余應力；液氨介質具備應力腐蝕環境，即含水量0 . 2 % ，且有空氣（ o2或co2 ）污染（或摻入） ，使用溫度高於零下5 ；母材強度越高，應力腐蝕裂紋產生的傾向就越大。Abstract : the synthesis, adsorptive properties and some other mechanical properties of a kind of high water - adsorbing fiber were studied, paper made from this high water - adsorbing fiber beaten with 80 % ( wt ) cotton, demonstrated that the fiber had rap id adsorption, high adsorptive capacity and holding capacity for all of distilled water, main - water and man - made urea, and had suitable mechanical properties to be used to make high water - adsorbing paper
文摘:本文報道了一種高吸水纖維的合成、吸水性能及其部分物理機械性能，並利用這種高吸水纖維與純棉纖維按1 ： 4的比例進行混合打槳而製成一種高吸水紙，對這種吸水紙也進行了吸水性能及部分機械性能的測定，結果表明所合成的高吸水纖維對蒸餾水，自來水及人工尿液的吸附速度快，吸收量高，並且可在一定的壓力下保持較高的吸水量，還可以與棉纖維混合成紙。What have made a large amount of harmonic and high electro - magnetic interference ( emi ) has two reasons. the first reason is mainly the hard - switching pwm mode. the switch turns on at high voltage and turns off at high current in a short time ( ns ), which leads to a high du / dt and di / dt and emi
其原因一是由於硬開關的pwm調節方式，電子開關速度很快（ ns數量級）在高電壓下導通，大電流下關斷，導致很高的du dt和di dt ，產生很強的尖峰脈沖，對周圍環境造成電磁干擾。分享友人