膨脹壓力系數 的英文怎麼說
中文拼音 [péngzhàngyālìxìshǔ]
膨脹壓力系數
英文
expansion pressure coeficient- 膨 : 動詞(物體的長度或體積增加) expand; swell
- 脹 : 動詞1. (膨脹) expand; dilate; inflate 2. (脹大) swell; distend; bloat
- 壓 : 壓構詞成分。
- 力 : Ⅰ名1 (力量; 能力) power; strength; ability; capacity 2 [物理學] (改變物體運動狀態的作用) forc...
- 系 : 系動詞(打結; 扣) tie; fasten; do up; button up
- 數 : 數副詞(屢次) frequently; repeatedly
- 膨脹 : expand; swell; dilate; inflate; puff; bulge; inflation; expansion; dilatation; buckling; swelling...
- 系數 : [數學] coefficient; ratio; modulus; quotient; factor
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Benefit of this modified shape is that the expansion around the first corner reduces the initial pressure coefficient on the frustum to low values.
這個改進的外型的優點是繞第一角點的膨脹會把截錐上的初始壓力系數減少到很低的值。Suction gas pressure goes up as the compressor run at the lower speed in the lower burthen, and this is beneficial to lower systems energy - consume. when the system is controlled by wvf, the discharge change of the evaporator is not linear ; the electronic expansion valve is adopted to regulate the system superheat degree, and the controlled object is parameter time varying, accordingly, the time varying controller should be adopted
在負荷較小時,壓縮機採用低速運轉,吸氣壓力升高,這對系統降低能耗是有利的;變頻控制時,蒸發器製冷劑流量的變化並非線性;系統中採用電子膨脹閥進行過熱度控制,被控對象具有參數時變的特性,相應地宜採用變結構的控制器。In this paper, the influence of cycles of drying and wetting on strength and deformation are studied by means of routine direct shear apparatus, triaxial apparatus and light consolidation apparatus which include : the influence of force of constraint on strength, the total stress strength of expansive soils with different saturation degree, the influence of cycles of drying and wetting on the total stress strength, the relation between saturation degree and compression modulus and that between saturation degree and void ratio, the influence of cycles of drying and wetting on the effective stress strength, the relation between saturation degree and generalized suction
本文利用常規直剪儀、三軸儀以及輕便固結儀,分別對非飽和膨脹土的強度和變形特性以及干濕循環對強度和變形的影響進行了一系列的試驗研究。以飽和度、干濕循環次數為變量,分別探求了外力約束對膨脹土強度的影響,不同飽和度膨脹土的總應力強度特性,干濕循環對非飽和膨脹土總應力強度的影響,飽和度與壓縮模量以及孔隙比的關系,干濕循環對飽和膨脹土有效應力強度指標的影響,廣義吸力與飽和度的關系,建議了一組計算非飽和膨脹土變形及強度特性的經驗公式。The results indicated that, the fabrication process of ultra - fine grain material is mainly determined by the stress, rotate speed and the flux of cooling water. the grain refining and the hardening effect are mostly affected by the rotate speed and the flux of cooling water. compared with commercial ly12, the invalidate strength and the prolongation rate of the ultra - fine grain material are properly improved in the measurement of compression property ; and the abrupt change of the dilatability of the ultra - fine grain material at 500c is found ; also the phenomena of which the grain size of these microstructures is stable when annealed under 300c is observed
研究表明,採用本文提出的摩擦壓扭強變形區轉移法可以得到棒狀的超細晶材料,軸向壓力、扭轉速度和溫度是採用該方法制備超細晶材料的主控參數;試件的旋轉轉速和冷卻速度對變形區晶粒細化和硬化效果影響顯著;超細晶ly12的壓縮性能與淬火+自然時效狀態的ly12壓縮性能相比,斷裂強度和延伸率均有一定程度的增強;超細晶ly12的熱膨脹系數在550左右發生明顯的變化。In metal matrix composites, thermal residual stresses will arise due to get ( coefficient of thermal expansion ) mismatch between matrix and fiber during cooling
在擠壓鑄造的金屬基復合材料中,由於基體和纖維的熱膨脹系數相差很大,所以在制備過程中由高溫(工藝溫度)冷卻至室溫時復合材料中會有熱殘余應力產生。They will short down the working life of air compressor because they are always started or stopped when we want to make the railway carriage stay in a fixed temperature. now, automatic and intelligent control systems are being applying in bus air - conditions control. in this way, computers control the work of air compressor, the turnaround speed of fan, the open degrees of wind controlled doors and so on
我國大多數客車空調仍然採用簡單的壓縮機開關控制及循環離合控制系統,如:離合器?熱力膨脹閥系統( cctxv )和離合器?節流管系統( ccot ) ,這些控制方式的精度低,當進行恆溫控制時壓縮機處于頻繁的開、停狀態,縮短了壓縮機的工作壽命。Comparing their expansion force counted by liner interpolation, the author puts forward the critical value existing in the reinforcement ratios. in the meantime, the tri - axial shear test of cu on the expansive soils and reinforced soils under different compactness, layers and confinement pressure are finished. it is concluded that the cohesive force of reinforced soils is greater than that of expansive soils, moreover the internal friction of reinforced soils is equal to that of expansive soils
同時對膨脹土及其加筋土分別進行了不同壓實系數、加筋層數及周圍壓力下的三軸固結不排水剪切試驗,分析這三種因素對素土和加筋膨脹土強度的影響,比較加筋前後膨脹土的c 、值,得到c值增加值幾乎不變的結論。It specifies the process of the design, simulation and experiment of liquid cooling system. main contents of the thesis are as follows : description of the present usage of liquid cooling system, presentation of a new type of liquid cooling system and description of its work principles ; design of the liquid cooling system, which mainly deals with the design and collating calculating of serpentine condenser and heat exchangers adopted in this system. meanwhile, the model chosen calculating of compressor 、 thermal expansion valve 、 plate evaporator 、 water pump and the like equipment used in the system are also carried out
本文的主要內容如下:對液冷源使用現狀進行了描述,提出了一種新型液冷源系統並對其工作原理進行了闡述;對系統進行了設計,主要對系統中所採用的管帶式冷凝器和水側空/液換熱器進行了設計和校核計算,同時對系統中所用到的壓縮機、熱力膨脹閥、板式蒸發器、水泵等配套設備進行了選型計算;分別對製冷系統和冷卻液循環系統進行了數學建模。So this question must be solved at first. a variety of factors which influence cte mismatch induced thermal stresses such as fiber array, temperature dependent material properties, composites fabrication temperature and pressure has been discussed. on the other hand, the temperature gradient induced thermal stresses is also analysed and factors such as heat treatment conditions, composites fabrication temperature and pressure to influence the stresses are investigated
本文首先利用ansys模擬基體材料分別處于理想彈性應力狀態和理想彈塑性應力狀態時,各種因素諸如纖維排布模式、模量等性能參數是否隨溫度變化以及復合材料制備溫度和壓力對熱膨脹系數不匹配誘導熱應力的影響;另外,我們也對溫度梯度誘導熱應力進行了一定的研究,分析了各種熱處理工藝以及材料制備溫度、壓力對它的影響。2. the concept design is the key phase of the first stage of system optimization. the paper emphatically discusses with emphasis several issues difficulty to answer, such as the determination of the soil parameters, the soil pressure and the safety factor and the reliability of retaining structure, summaries and analyses the main geotechnical problems during the excavation on the four familiar geologic strata of saturation soft soil on the class i terrace of the yangtze river, aged - clay, expansive soil and loess and investigates carefully the patterns of deformation and destruction of pit slope in the saturation soft soil, puts forward three basic principles of selecting schemes of retaining structure, namely : facing to the problem, facing to the characteristics of excavation and environment
( 2 )概念設計是深基坑工程第一步優化? ?系統(方案)優化設計中的關鍵,文中重點討論了概念設計中的幾個難點問題,如土性參數的確定、土壓力的選取、深基坑工程的安全度和可靠度分析等;總結分析了飽和軟土、老粘性、膨脹土和黃土這四類常見地層條件下的深基坑工程中的主要巖土工程問題,其中重點研究了長江級階地上的飽和軟土深基坑邊坡變形和破壞模式,提出了選擇支護方案的基本原則,即:面向問題、面向基坑特點、面向周邊環境特點。The physical experiments and theories on thermodynamics prove that gas thermal insulation coefficient changes apparently when hydraulic transition process happens. so four appropriate processes were given - sub - process 1 of compressing, sub - process 2 of inflating, sub - process 3 of inflating, sub - process 4 of compressing
試驗與理論分析表明,在管道系統發生水力過渡過程時氣體多方指數n存在較為顯著的變化,並非單一常數,從而提出了相應的四過程:即壓縮子過程1 、膨脹子過程2 、膨脹子過程3和壓縮子過程4 。Which has high strength, good ductility, impact bearing, erode - bearing, besides, its linear expanding coefficient is almost equivalent to concrete, and it has excellent performance - price ratio etc. this paper is related to 8 rc - poles wrapped by gfrp ( sgfw430 ) and rc - poles are compressed axially, in order to analyze the influence of different stick layer over the pole ' s work performance and the influence between three type axial compress ratio ( 0, 0. 8, 1. 1 ) with one layer gfrp with the contrast poles about limit load - bearing capability, failure state, ductility, section stiffness, restrict losing owing to stress - difference
其具有強度高,延性好;抗沖擊、耐腐蝕;線膨脹系數與混凝土接近;性能價格比高等多個特點。本文通過8根外包單向gfrp ( sgfw430 )的rc組合柱,以及混凝土對比柱在軸心荷載作用下的試驗為基礎,具體詳細地分析柱子在粘貼不同層數的高性能玻璃纖維和在不同的軸壓比( 0 、 0 . 8 、 1 . 1 )下粘貼一層的高性能玻璃纖維后混凝土組合柱相對對比柱在極限承載能力、破壞形態、延性、截面剛度、應力差帶來的約束損失等方面的變化情況。Now, the reported fgs can measure many physical parameters including temperature, strain, stress, displacement, pressure, torsional angle, twist moment ( moment of torque ), accelerated velocity, current, voltage, magnetic field, frequency, density, coefficient of thermal expansion, trembling etc. some of the fiber grating sensing systems have been put into practical use
目前,已報道的光纖光柵傳感器可以檢測的物理量有:溫度、應變、壓力、位移、壓強、扭角、扭矩(扭應力) 、加速度、電流、電壓、磁場、頻率、濃度、熱膨脹系數、振動等,其中一部分光纖光柵傳感系統已經實際應用。分享友人