瞬時強度 的英文怎麼說
中文拼音 [shùnshíqiángdù]
瞬時強度
英文
instantaneous intensity-
At last, the conclusions of the whole thesis are drawn, and it is put forward that the future research emphases on the infrared radiation absorption ct technology should focus on : instantly get the absorption projections are the crucial factor to utilize the technology industrially ; on the basis of the hypothesis that the gas is ideal gas, species concentration of particular gas medium can be measured at the same time, which must be helpful to comprehend combustion essence ; if laser source to replaces blackbody stove, for irradiant flame, interferometric projection can be attained, and its temperature distribution will known
最後，對全文進行了總結，並指出今後研究工作重點。指出：瞬時得到各方向的投影是此技術實用化關鍵；在獲得溫度分佈信息基礎上，進行必要的假設和推導，能同時得到火焰中某特定組分濃度的分佈，這必將進一步我們對燃燒本質的理解；利用方向性好，輻射強度高的激光源代替常規的黑體爐，能得到輻射干涉投影圖像，這樣就能測量所介紹系統不能測量的發光火焰溫度分佈。Compared with the classical bp algorithm, robust adaptive bp algorithm possesses some advantages as following : ( 1 ) increasing the accuracy of the network training by means of using both the relative and absolute residual to adjust the weight values ; ( 2 ) improve the robustness and the network convergence rate through combining with the robust statistic technique by way of judging the values of the samples " relative residual to establish the energy function so that can suppress the effect on network training because of the samples with high noise disturbances ; ( 3 ) prevent entrapping into the local minima area and obtain the global optimal result owing to setting the learning rate to be the function of the errors and the error gradients when network is trained. the learning rate of the weights update change with the error values of the network adaptively so that can easily get rid of the disadvantage of the classical bp algorithm that is liable to entrap into the local minima areas
與基本bp演算法相比，本文提出的魯棒自適應bp演算法具有以下優點： （ 1 ）與魯棒統計技術相結合，通過訓練樣本相對偏差的大小，確定不同訓練樣本對能量函數的貢獻，來抑制含高噪聲干擾樣本對網路訓練的不良影響，從而增強訓練的魯棒性，提高網路訓練的收斂速度； （ 2 ）採用相對偏差和絕對偏差兩種偏差形式對權值進行調整，提高了網路的訓練精度； （ 3 ）在採用梯度下降演算法對權值進行調整的基礎上，通過將學習速率設為訓練誤差及誤差梯度的特殊函數，使學習速率依賴于網路訓練時誤差瞬時的變化而自適應的改變，從而可以克服基本bp演算法容易陷入局部極小區域的弊端，使訓練過程能夠很快的「跳出」局部極小區域而達到全局最優。The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,
基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。The maximum of instantaneous global radiation is beyond 1000w / m2 and the ten - days average intensity is 338. 90w / m2 because of high atmospheric transparency over semi - arid rainfed agriculture region of loess plateau between june and august. global radiation, reflected global radiation and surface long wave radiation emerge the characteristic of daily variations on a typical clear day and cloudy day, whereas atmospheric long wave radiation has not this characteristic. meanwhile, net radiation, latent heat flux sensible heat flux and soil heat flux appear the same characteristic as the mean daily variations above spring wheat field and bare soil on a typical clear day and cloudy day
黃土高原半乾旱雨養農業區夏秋季大氣透明度較高，晴天地面的總輻射值最大瞬時值均超過1000w m ~ 2 ， 6 8月總輻射旬平均強度為338 . 90w m ~ 2 ；典型晴天和陰天總輻射、反射輻射、地表長波輻射均表現出明顯的日變化特徵，而雨天沒有明顯的日循環規律；無論是晴天、陰天還是雨天，大氣長波輻射基本沒有明顯的日變化規律。Refer to the impacting - echo technology, we impacted the apex of the steel bar and incepted the reflecting stress ave through the resonator that fixed on the apex of the steel bar, and the value of the consolidating wave speed was calculated based on the time of stress wave transmitted and the length of the steel bar, so, identifying the reflecting signal is the key of the consolidating wave speed method
借鑒于沖擊回波技術，固結波速的測定方法是在鋼筋測桿的出露端施加瞬態沖擊載荷，由安設在測桿頂端的傳感器接收反射應力波信號，根據應力波的走時和測桿的長度折算固結波速的大小，因此反射信號的識別是固結波速法檢測混凝土強度的技術關鍵。Furthermore, we determined the time - to - failure for 70 / 30 ? pldlla cages subjected to loads well below their instantaneous mechanical strength
此外，我們確定了70 / 30聚左旋/消旋乳酸融合器在低於瞬時強度負荷下的衰竭時間。It is a reliable instrument for the measurement of the coherent structure in turbulence. an improved 2 - d ptv was developed based on previous research experiences, which can be used to measure the trajectories of particles motion. for the experimental study on the particle motion in the dilute solid - liquid two - phase flow, especially for the motion characteristics and dynamic characteristics of coarse particles in water, this kind of system was proved to have great advantages
利用該系統可獲取大量的統計樣本並進行計算機快速分析，為明槽紊流相干結構的試驗研究提供了一種嶄新的測量手段；在前人工作的基礎上，開發了一種能夠測量水流中顆粒運動軌跡的ptv系統，該系統具有可靠的精度，能同步測量全剖面的顆粒瞬時運動信息，為顆粒運動特性及動力學特性的試驗研究提供了強有力的手段。A three - dimensional - acoustic doppler velocimeter is used to measure the velocity components of the flow field in all three coordinate directions for different discharge and measurement site. the influence of measurement site and the depth / vegetation height ratio on the measured velocity profile and turbulence intensity and the renolds stress is analyzed. the characteristics of the measured velocity distributions and the results of the previous investigators are used to select an analytical expression for the shape of the velocity profile
利用三維超聲波多普勒流速儀（ adv ）量測不同位置、不同流量下的瞬時流場。分析了測點位置和水深與植被高度比對時均流速分佈的影響。本文還給出了種樹段紊動強度及雷諾應力的垂線分佈。A reversible changes happens when exposed to an external electric field. apparent suspension viscosities and shear stress can increase several orders of magnitude
當對它施加電場時，其粘度和剪切強度瞬間變化幾個數量級，表現出固體的性質，具有快速可逆的特點。Apparent suspension viscosities and shear stress can increase several orders of magnitude. the kaolinite - organic matter intercalation compound is a new material with properties both of kaolinite and organic matter
當對它施加電場時，其粘度、剪切強度瞬間變化幾個數量級，表現出固體的性質，具有快速可逆的特點。The instantaneous unit hydrograph theory would be suitable for the high antecedent baseflow and the high rainfall intensity to estimate the direct runoff, but it still needs to prove its fitness with much more cases
在臨前基流量較大或降雨強度較大時，應用瞬時單位歷線理論分析逕流特性之準確性較高，然確實之適用條件仍有待進一步之研究。The corresponding variation of olltput voltage due to the change of total laser intensity is measured by a photo detector. a displacement - time curve can be obtained by calibrating the re1ationship between block position and output voltage of the photo detector. through the use of simple mathematical operation, the bird - shell velocity and acceleration histories can be determined, and therefore the bird - shell instantaneous velocity at any points within the measurement range can be obtained
該系統發射的一片狀激光受運動鳥彈的依次阻擋后，相應的光強度變化將被測出並轉換為位移時間曲線，經過簡單的數學運算，該系統能用來確定鳥彈速度和加速度的時間歷程，因而可確定鳥彈在被測區域內任一點的瞬時速度。In this work, incident super - gaussian pulse propagation in conventional single - mode fibers has been investigated in detail after taking into account the fiber chromatic dispersion. the results show that for an incident super - gaussian pulse with steep leading and trailing edges, its shape undergoes a variation from near - rectangular, two - peak, and finally to single - peak. in the meantime, its peak intensity increases at first, after passing a maximum, and finally decreases monotonously
數值模擬的結果表明:超高斯入射光脈沖在光纖中傳輸時脈沖波形、瞬時惆啾、以及峰值強度的演變規律與高斯入射脈沖不同，脈沖波形不再總保持單峰結構，通常將經歷一個從近平頂、多峰、最後到單峰的演變過程;從脈沖的前沿到后沿，瞬時明啾也不再為線性，而是具有多個極值;峰值強度隨傳輸距離的變化趨勢也不再為一單調遞減，而是先增加后減小。Secondly, the steady and transient characteristics of concentric cylinder er clutch and plane er valve are studied with the consideration of yield. it can be found that when the extra electric field is suddenly applied, non - yield region in the clutch dose not generate synchronously. there is a retardation time which becomes shorter while the extra electric field becomes stronger
對圓桶型電流變離合器動力學特性的分析發現，在離合器關閉時突加電場瞬間，流場中並未瞬時產生未屈服區，而存在滯后時間，且隨外加電場強度的增大而減小；電流變液屈服應力方程中，參數以2 . 0為界，和時，離合器動力學特性具有顯著區別。On the other hand, heavy tamping is also a transient impact load that will produce strong ground vibration
同時，從加載角度考慮，強夯又是一種瞬時沖擊荷載，作用在地面時產生振動問題。Based on the general and flexibility of the system, it completes the measure of open circuit voltage and short circuit automatically, and data transfer. it can save time and manpower, increases the productivity and improves the working condition
基於系統的通用性和靈活性，該系統可精確可靠地自動完成電池開路電壓、瞬間短路電流的測試，數據傳輸，節約了相當的時間和人力，不僅提高了勞動生產率，而且大大地降低了工作人員的勞動強度。When matter is impacted by shock compression with hundreds pa, its temperature may be thousands karat, even it may be ten thousand karat, and there is strong spectrum to radiate at the same time. this radiation is mainly made from the thermal radiation of matter, and radiating transition of atoms and molecules of matter
在數百吉帕的瞬態強沖擊波作用下，材料的沖擊溫度可上升至幾千開，甚至上萬開，同時伴隨著強烈的輻射，這種輻射主要來源於材料的熱輻射，以及材料的構成原子、分子的輻射躍遷。Using the optimization control method of the moderm control theories, the time - varying control and output - feedback control the authors study the variable structure active control over the rotor vibration with sma, especially the method of restraining the transient response of the rotor vibration. they get the rule of the optimum control force and the optimum control electric current and discuss the influence of variable stiffness on the total system stiffness through analyzing the structure of sma controller. they also indicate the shortcoming of the orthodox design method of a controller, especially the imbalance phenomenon caused by the lack of the rod stability, and propose a new method for improvement and items which ought to be paid attention to in the design stage
運用現代控制理論中的最優控制方法，引入時變控制和輸出反饋控制，研究利用形狀記憶合金對轉子振動進行變結構主動控制，特別是抑制轉子振動的瞬態響應的方法，得出了最優控制力和控制電流的強度變化規律；通過分析形狀記憶合金動作器的結構，探討了變剛度支承對系統總體剛度的影響，指出了傳統設計方法的不足之處，特別是由壓桿穩定性不足引起的失穩現象，並提出了改進的方法和在設計中值得注意的問題Once collision accident occurred when the train is moving with fairly high speed, the energy - absorbing structure produces large plastic deformation along the direction needed to absorb sufficient energy, at the same time, the deceleration must be controlled within the endurable limits to human body
當列車在正常運行時，車體有足夠的強度和剛度，需要滿足有關規范規定的強度、剛度要求；在較高速下發生碰撞事故時，吸能結構能夠沿所需方向產生塑性大變形吸收足夠沖擊動能，保證機器間和乘客區不發生破壞，並延緩碰撞作用時間，降低碰撞瞬間最大減速度，使撞擊減速度在人體承受范圍內。When it is raining heavily in one place, there may not be any rain in other areas. moreover, the intensity and movement of thunderstorms change rapidly rendering its forecast rather difficult with rather short forecast range
雷雨覆蓋的范圍甚小和不均勻，當某些地方下大雨的時候，另一些地方可能沒有下雨。此外，雷雨的強度和移動變化急劇，故此雷雨有瞬息萬變和此消彼長的特性，較難預測，預報的時限亦較短。分享友人