rotation value 中文意思是什麼

Abstract : it is observed that the sommerfeld ' s formula for a progressive spherical wave is not covariant with respectro the rotation of the coordinate system. it contains complex partial waves that are not physical. the standing wave representation of the same formula is shown to be covariant and physical. it is applied to solve the boundary value problem of fiber optics. the radiation modes as well as the guided normal modes are obtained in closed forms. the intensity distribution in various modes is obtained. it is remarked that the mode of critical refraction is missing

文摘:說明了球面行波的索末菲公式在坐標轉動下不協變.證明了球面波的駐波表示是協變的，因而是一個物理的關系式，故適用於圓柱坐標中各類波動方程的定解問題.作為一個例，應用於光纖光學，導出了受導簡正模和輻射模的表達式，以及各模式的強度分佈

When the dimensionless governing parameters exceed some critical value, the bifurcation phenomena in the rotation pipe with rectangular and elliptical will appear and the flow structure becomes more complicated

對于矩形截面和橢圓截面管道，當控制參數較大時，流動會出現分叉現象。

The value of the above series of difficuties is calculated by adding the value of the throw ( 0. 20 minimum for a throw during a difficulty with rotation ), plus the value of the catch ( 0. 20 minimum for a catch during a difficulty with rotation ), plus 0. 10 for the intermediary difficulty or difficulties with rotation - for a total of 0. 50 at the minimum

上述一連串難度動作的價值由拋的價值（在帶有轉體的難度過程中完成的拋最少0 . 20 ）加上接的價值（在帶有轉體的難度過程中接器械最少0 . 20 ）再加上完成一個中間難度或者帶有轉體的難度的0 . 10的加分? ?總分最少0 . 50分。

Tartaric acid derivatives were synthesized and their specific rotations were measured. it was found that diester 3 exhibited an unusually high negative value of specific rotation

合成出系列的l -半螺旋型酒石酸衍生物16 ，測定比旋光度，發現酒石酸二乙酯2

( 3 ) compared to young stand of the first rotation of larix olgensis, activity acidity ( ph value ), organic matter content, humus component content, moisture, and total porosity in rhizosphere soil of the young stand of the second rotation of larix olgensis decreased

（ 3 ）二代落葉松幼齡林與一代落葉松幼齡林相比，根際土壤活性酸（ ph值） 、有機質含量、腐殖質組成、土壤水分含量和總孔隙度降低。

This text completely and systematically studies the status and the development of the pyrolysis and the fluidization of biomass, which distill the bio - oil in the domestic and international area, as well as the existing problems. this thesis primarily include following aspects : ( l ), by experimenting and measuring the energy ( heat value ) and the content of c, h, n chemical element of right 20 kinds of common biomass, on the base of the experimental result, and respectively established the biomass energy predict experiment formula with the element of h and c is from change, and passed the ro. os examination, which provides the basis and convenience for flash pyrolysis fluidization device energy to convert the rate to compute with biomass energy utilization calculation ; ( 2 ), proceeded the tg and dtg experimentation equal velocity ( 10 ? / min, 20 ? / min, 40 ? / min, 60 ? / min ) heating and constant temperature heating by studying on eight kinds of biomass samples, according to the experimental data and arrhenius formula, we established the dynamics model of pyrolysis of, then, using the goast - redfern and p function, we also solved the dynamics parameters and analyze out every kind of biomass ' s frequency factor and parameters of activation energy, and established the every kind of dynamics model of pyrolysis of biomass, all of these provide the theories and basis to make sure the reactor ' s flash pyrolysis work temperature scope design and the describing of pyrolysis reactor dynamics ; ( 3 ), in order to study and ascertain the process of heat completely getting to pyrolysis time of varied size biomass particles, we observed and measured the ratio of length and diameter ( l / d ) with the varied biomass through electron microscope, we concluded the l / d ratios usually is from 5. 0 to 6. 0, the average is 5. 3 ; ( 4 ), we studied the process of biomass transiting and the theory of complete pyrolysis time with the theory of complicated heat field, we got the time ( t ) of the varied size biomass particles arriving to complete pyrolysis, and we knew that the complete pyrolysis time and the time which get to the biggest production ratio are identical, all of these studies provide the theory base for design and forecasting the flash pyrolysis reactor solid state resort time ; ( 5 ), according to the above experiment result, synthesize to make use of the engineering the mechanics, engineering the material, machine the design to learn the principle, deduce, establish the theory of rotation cone flash pyrolysis reactor material resort time ( t ) and reasonable rotation velocity ( or frequency ) relation theory ; and ( 6 ), we gave the reactor ' s smallest cone angle certain, reactor cone wall strength design theory, the reactor production ability theory, the power design method and the critical rotation velocity theory

本文較全面、系統地綜述了國內外生物質熱解液化制取生物燃油技術研究發展現狀及存在的問題，主要研究內容有： （ 1 ）實驗、測定了20種常見生物質的能量（發熱量）和c 、 h 、 n元素含量，根據實驗結果分別建立了以h和c為自變量的生物質能量預測經驗公式，並通過r _ （ 0 . 05 ）檢驗；為閃速熱解液化裝置能量轉化率計算和生物質能量利用率計算提供了依據和方便； （ 2 ）選擇了8種生物質試樣作了等加熱速率（ 10 min 、 20 min 、 40 min 、 60 min ）和恆溫加熱的tg和dtg實驗，根據實驗數據和阿倫尼烏斯公式建立了生物質熱解反應動力學微分方程，並採用goast - redfem積分法和p函數對其動力學參數進行了求解，解析出各種生物質的頻率因子和活化能參數，進而建立了各種生物質的熱解動力學模型，為科學確定反應器的閃速熱解工作溫度范圍及熱解反應動力學描述，提供了理論和依據； （ 3 ）為研究和確定不同尺度的生物質顆粒中心達到全熱解的時間，在體視顯微鏡下對不同粒度的生物質顆粒的長徑比進行了實驗觀察和測定，得出生物質的長徑比（ l d ）一般在5 . 0 6 . 0之間，平均為5 . 3的結果； （ 4 ）採用復雜溫度場傳熱學理論對生物質傳熱過程及充分熱解時間理論進行了研究，解析推導出了不同尺寸生物質顆粒中心溫度達到充分熱解溫度的時間（ t ） ，得出了理論推導的充分熱解時間與最大產油率的熱解時間相一致的結果，為閃速熱解反應器固相滯留時間設計和預測提供了理論依據； （ 5 ）根據上述實驗結果，綜合運用工程力學、工程材料、機械設計學原理，推導、建立了轉錐式閃速熱解反應器物料滯留時間（ ）與轉速（或頻率）合理匹配理論； （ 6 ）提出了轉錐式閃速熱解反應器的最小錐角設計、錐壁強度設計、生產能力設計理論和功率計算方法及臨界轉速理論等。

Maximum efficiency is obtained by the continous reappraisal of the breading-value of each selected tree as it approaches rotation age.

只有到樹木接近輪伐期時，對所選的每株樹木的育種值，應作反復多次的評價，才有可能獲得最大的效益。

The paper analyzes the main reason of causing system oscillation when it is adjusted by original pid control method, and proposes control strategy of combining basic value of rotation rate with adjustment value to control pump rotation speed according to non - linear characteristic of the system and control request

本文分析了原pid控制方案導致系統劇烈振蕩的主要原因，並且針對系統的非線性特點和系統控制要求，提出了將控制量基值與調節值相結合實現對輸油泵系統控制的控制策略。

It analyses the influence of, dilatancy, rotation of soil cell ' s principal stress, pore water pressure and the damage softening. the author puts forward a critical value of 0. 01d - 0. 02d to judge the pile - soil slippage

分析了c 、的異步發揮，土的剪脹性，土單元主應力方向旋轉，孔隙水壓力以及損傷軟化對側阻發揮的影響。

By vibration measurement and order proportion spectrum frequency analysis for high rotation speed reciprocating compressor pipe network, vibration causes are searched out, reducing vibration methods and treatment measure are established, after improvement, high vibration amplitude value is reduced greatly for pipe network

摘要對高速往復壓縮機管網振動進行了測試和階比譜頻率分析，找出了振動原因，確定出實際可行的減振方法和處理措施，經過改造后的機組，原振動較大點幅值得到大幅度降低。

Base on the model founded, this paper assessed the ride performance by analyzed the root mean square value of power spectral density of acceleration of z - axis and round y - axis rotation acceleration at the driver ’ s seat. the root mean square value of suspension working spaces and dynamic tyre loads were also analyzed. base on the assessing system of vehicle ride performance, the root mean square

根據模型建立的實際情況，對車輛標準載荷情況下的平順性指標進行了計算，對人體感受到的振動採用了垂直方向和繞橫軸轉動方向的加權振級來評價，計算了車輛懸架系統的動撓度均方根值和各車輪相對動載荷均方根值的情況，全面的評價了車型的平順性。

Abstract : the article introduces cement slurry rheological characteristics and the method of determining the main parameters for cement slurry rheological characteristics, and analyses the difference between the rotation type and funnel type of viscometers in measuring plastic viscosity and apparent viscosity of cement slurry, and then the limitation of the funnel type of viscometer is described. the difference between rigidity and yield value is pointed out. finally through analysis of cement slurry rheological characteristics, the cement slurry filling mechanism is proposed, and the main factors affecting cement slurry are studied

文摘:介紹塑性流體水泥漿的流變性及確定水泥漿主要流變參數的一般方法；分析旋轉式粘度計與漏斗式粘度計在測定水泥漿塑性粘度、表觀粘度時的區別，說明漏斗式粘度計在使用上的局限性；針對粘聚力（動切力）的測定進行分析，認為粘聚力與動切力為不同的概念.通過對水泥漿流變性分析，提出水泥漿充填機理，並對影響水泥漿擴散的主要因素，即粘度影響水泥漿在節理裂隙中向前擴散的速度，動切力限制水泥漿擴散距離作了說明

If landscape is not supported, the only valid rotation value is 0 degrees

若不支持橫向，則唯一有效的旋轉值為0度。將

When the rotation has the same direction with the axial velocity, the effect of rotation enforces the intensity of secondary flow and the heat convection, the friction factor and the nusselt number increases as f increase ; when the rotation has the opposite direction with the axial velocity, the flow structure becomes more complicated, for f = 1. 2, the complicated structure of secondary flow generates, the friction facior and nusselt number almost has the same value of stationary straight pipe

當旋轉方向和主流方向相同時，旋轉的作用加強了二次流的強度，使得管道摩擦系數變大，管道換熱效果增強；當旋轉方向和主流方向相反時，管道內流動結構變化十分明顯， f - 1 . 2時，流動結構最為復雜，摩擦系數降至最低，換熱效果最弱。

In the control strategy, the basic value of rotation rate is calculated by corrected similar formulation and the adjustment value is ascertained by output of fuzzy controllers, the strategy can assure steady precision and to eliminate vibration

在這種控制策略中轉速控制量的基值根據修正後的相似公式進行計算，而轉速控制量的調節值為模糊控制器的輸出，這樣做既保證了系統的穩態精度；也避免了系統振蕩。

The rotation of the motor is controlled according to the temperature of the outlet, the changing of motor ' s rotation changes the proportion of cold to hot water to adjust the temperature to the preset value

恆溫出水功能通過控制一個直流電機的正、反轉來調節冷、熱水的混水比例，從而達到出水溫度控制的目的。

Based on deep researching of electronic canceling image - rotation technique, it designs high speed digital video processing module of fpga + dsp hardware, provides the relating arithmetic, and adopts fpga to realize video value insert which has a strict timing characteristic and the image - space transformation with the complex control requirement, the trigonometric function with a lot of operation is finished by the dsp

本文在對電子消像旋技術深入研究的基礎上，根據消像旋演算法需求和實時性要求，設計了fpga + dsp硬體構架的高速數字視頻處理平臺vsb ，並提出一種與之相適應的演算法解決方案。基於vsb硬體資源採用fpga完成時序要求較嚴格的視頻預插值操作和控制復雜的圖像坐標變換;由dsp完成控制簡單但運算量較大的三角函數運算。

Puts forward the optimum design thought of the flywheel shaft system, designs the optimum method to match the mass " and value request by choosing the rod ' s shape and material, designs the concrete optimum method, and optimizes the mass and price request of the flywheel shaft system using the method ; 5. the flywheel ' s and the shaft ' s dynamics equation under high speed rotation are built, and f. e. m

提出了碳纖維復合飛輪軸系的優化設計思想，設計了通過輪轂外形和材料的優化選取，來達到軸系的質量要求和成本要求的優化方法，以及具體的優化步驟，並利用該方法針對軸系的質量要求和成本要求進行了優化設計； 5

( 3 ) we introduced the methods to estimate the shape and rotation of the asteroids with the lightcurves. with the improved newton iteration method, we propose a method to solve the problem on the convergence of the iteration when the initial value is far from the real solution

第三章著重闡述了小行星形狀和自轉參數的研究方法，針對目前人們最常用的綜合振幅和周期的方法所存在的問題? ?解的收斂問題，提出了一種解決的方法。