速率梯度 的英文怎麼說
中文拼音 [sùlǜtīdù]
速率梯度
英文
velocity gradient-
Biogas in commercial size existed in sedimentary basin which has high deposition velocity and low geothermal gradient and shale, coalbed or compacted sandstone in unconventional environments
商業規模的生物氣存在於具有高沉積速率、低地溫梯度的沉積盆地中和非常規環境下形成的頁巖、煤層或緻密砂巖中。The reaction rate is limited by the concentration gradient of oxygen in the sample.
反應速率受試樣中氧濃度梯度的限制。Procreant knowledge expression and forward inference engine are adopted in the method of fault diagnosis based on expert system theory. in the fault diagnosis applying neural network theory, six kinds of improved arithmetic of back - propagation arithmetic, including gradient descent with momentum, variable learning rate back - propagation, resilient back - propagation, quasi - newton, levenberg - marquardt and conjugate gradient, are applied to diagnose the faults of electric load manage center and solid state power controller. different diagnostic results gotten by simulation are compared at last
在基於專家系統的故障診斷方法中，採用了產生式知識表達和正向推理機制；在基於神經網路的故障診斷方法中，則分別採用了bp神經網路的附加動量法、自適應學習速率、彈性bp演算法、擬牛頓法、共軛梯度法和levenberg - marquardt法對電氣負載管理中心和固態功率控制器的故障進行診斷，並對由模擬得到的不同診斷結果進行比較。By performing fourier transformation, the relationship between the turbulent intensity of the particle and that of the carrier fluid was obtained which makes clear that particle size, specific gravity, velocity gradient, and the characteristic frequency of energy - containing eddies are four basic influencing parameters. it is proven theoretically that under certain conditions, the stream - wise and transverse particle turbulent intensities exceed those of the carrier fluid. based on the equations of two - phase flow, the presence of fine sediment suspension is shown to attenuate the turbulent intensity of the water
通過對細小顆粒在剪切流場中運動方程的fourier分析，得到了顆粒脈動強度和流體脈動強度之間的定量關系，表明顆粒粒徑、顆粒密度、流速梯度以及紊動場含能旋渦的特徵頻率是影響顆粒脈動強度的主要因素，首次從理論上證明了在一定條件下，顆粒在縱、垂向的脈動強度均會超過相應的流體脈動強度，為已有的實測資料提供了合理的解釋。Energy losses leading to a decrease in head are also done away with, likewise losses in flow rate from the screening installations, both of which can have a detrimental effect on the efficiency of the facility. the constructional effort required for a hydrodynamic screw is small compared to that required for a turbine. if the compact version of a hydrodynamic screw hydrodynamic screw trough power take - off unit combined as a single unit is used, the constructional effort can be further reduced
水力螺旋機技術的優點有：無需監控系統，可自行調節水體供給和供給頻率運行效率高於水輪機和小型渦輪機效率梯度平穩轉速低20rpm - 80rpm ，運行穩定防磨損無需定期清潔，易維護對河道湖泊里的魚蝦無損害基礎工事少，安裝簡便無堵塞，無需隔欄裝置能量利用充分等。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。This method is of high reliability and efficiency. it ' s regarded the one of the best designing method nowadays. to choose the best parameter of frication piece and make sure that the cloth ' s mechanical function is the aim of friction piece ' s parameter priority
為了圓滿解決上述兩個問題，本文採用廣義既約梯度法對摩擦片參數、變速器傳動比及變速器二軸六檔齒輪進行了優化設計，該演算法可靠性和效率都很高，是目前公認最為優秀的優化方法之一。The planeness and integrality of the flier - plate were ensured effectively by exerting restrictive pressure, controlling heating and cooling rate, lowering welding temperature or reducing welding time as much as possible, etc. theoretical model of creating quasi - isentropic compression via 93w - ofc - tc4 - a1 - mb2 system flier - plate with graded wave impedance was established, and numerical simulation of the impact process was then carried out
採取施加外部機械力、控制升降溫速率以及盡量降低焊接溫度或減少焊接時間（防止脆性金屬間化合物的過度增長）等措施，確保了焊接接頭的平整性和界面結構的完整性。建立起梯度飛片擊靶的理論模型，對93w - ofc - tc _ 4 - al - mb _ 2系波阻抗梯度飛片的擊靶過程進行了數值模擬計算。In the second chapter, we firstly present a circuit of 8 - bit, 80mhz samples / s thermometer - decoded dac with hierarchical symmetrical switching sequences which will compensate gradient error, on the basis of 8 - bit dac, we then present high frequency, high definition 12 - bit, 80mhz samples / s current - steering dac
第二章：提出了具有梯度誤差補償的高速8位、 80mhz溫度計碼數模轉換器，並在此基礎上進一步提出了高速、高精度12位、 80mhz采樣率電流舵結構數模轉換器。Both species grew poorly in the culture medium absent of salt, especially to a. corniculatum. moderate salt stress ( from 5 to 20 ) can stimulate the growth of both species, and the optimum salinity for growth was from 10 to 15. when the substrate salinity was higher than 30, stem height, root length, dry mass increment, net photosynthetic rate fell remarkably for both species
溫室內人工鹽度梯度栽培下，木欖幼苗地上、地下部分形態和生物量的增長均表現為低鹽促進和高鹽抑制，以10 15鹽度下最適合木欖幼苗的生長；鹽度從10增加到50時，木欖幼苗的凈光合速率、氣孔導度和蒸騰速率均隨之下降。Result of numerical simulation shows that the grads of continuous phase " s velocities decreases with the presence of microbubble of which the diameter is 100 / / w, the profiles of air volume fraction in the boundary layers is similar to triangle or echelon, affected by interaction among the particle, there is a saturated air fraction, within the scope of saturated air fraction, increasing the air injection ratio can accrete the friction reduction ratio, under the condition of same air injection ratio, the free - steam velocity is larger, the effect of friction reduction is worse
計算結果表明，直徑為100 m的微氣泡能減小近壁面連續相的速度梯度；微氣泡在邊界層中的濃度分佈近似為三角形或梯形分佈；受粒子間相互作用的影響，存在一飽和濃度；減阻率隨噴氣量的增大而增大，直至飽和噴氣量，此後，增大噴氣量，壁面摩擦阻力變化不大；相同噴氣量下，來流速度越大，減阻率越低。Finally, the developing strategies of liaoning forestry in the 21st century were mapped out, namely, based upon advantages of forestry in eastern areas, upgrading the forestry development in central regions, moving ahead into western parts gradually, increasing the vegetation coverage by using moods of moving of forest climate, in the end the ecological situations of liaoning province would be changed thoroughly
通過戰略性分區及研究各區的林業發展、人口分布、森林覆蓋率之間的關系，探討了21世紀遼寧林業的可持續發展戰略。 21世紀遼寧林業發展的主導戰略是生態林業戰略：以遼東林業的優勢為基礎，加速提高中部林業，以梯度推進的方式向西部推進，用森林氣候推移的方式及植被恢復技術提高遼西植被度，徹底改變遼寧的生態狀況。3 environment factors have some effects on photosynthetic rate, transpiration rate and stomatal conductance, and the effects show difference with changing species and treatments
3 、環境因子對四物種的光合速率、蒸騰速率和氣孔傳導力均有一定的影響，隨著種和水分梯度的不同，表現出不同的影響差異。We analyzed the alternative in functional phenotypic plasticity responding to variational entironments, consequently, we interpreted the difference between endangerment and wide - distribution of these closely related species, and the results showed : 1 all of the daily changes of photosynthetic rate responding to different water status show " double apices " except m. d, the daily changes of photosynthetic rate in m. d shows " simple apices " responding to arid soil water content, while " double apices " responding to the other soil water content. emerging time of daily maxim of pn is difference between species and between treatments. daily course of transpiration and stomatal conductance of these for species all show " double apices ", but the emerging time of daily maxim of transpiration rate and stomatal conductance rate are all different between species
結果表明： 1 、除小魚仙草外，四物種的光合速率日變化在不同水分梯度下均表現出「雙峰型」 ，小魚仙草的光合速率日變化在於旱時表現出「單峰型」 ，其餘水分梯度下表現出「雙峰型」 ，種間和梯度間日最大光合速率出現時間有一定的差異；四物種蒸騰速率和氣孔傳導力日進程也表現出「雙峰型」 ，但種間日最大氣孔傳導力和蒸騰速率出現的時間也存在一定的差異。Sum - of - gradient - magnitude measure is chosen to adapt all images with different enlargement according to analysis of focusing measures ’ character. for 3d bond targets, it is explained that why focusing window should be placed accurately. efficiency of the whole system is ensured by analyzing shift of focal plane when enlargement ratio is changing
為了保證快速採集到鍵合器件的清晰圖像，通過對調焦評價函數特徵的分析，選擇能夠適應各個放大倍數顯微圖像的梯度作為系統的自動調焦評價函數;針對三維器件說明了調焦窗口正確放置的原則和必要性;分析了變倍過程中聚焦平面位置的變化規律，提高了自動調焦的效率。It was found that the interface morphology of ni, cr, al - tac eutectic in - situ composite evolved from plan to cell and then to dendrite with the increase of solidification rate, if the gradient retained constant. in the same time, the eutectic microstructure also evolved from rod to cell and then to dendrite
本工作發現，在溫度梯度基本保持不變的條件下，隨著凝固速率的增大， ni ， cr ， al - tac共晶自生復合材料的凝固界面由平界面向胞狀及枝狀界面逐漸轉化。The results indicate that the critical ventilation speed is direct ratio to the heat release rate and reverse ratio to the height of the smoke barrier which lies in the stairs ' access between platform and concourse
研究表明：臨界通風速度與火災熱釋放速率成正比，與站臺和站廳間樓梯口處的檔煙垂壁高度成反比。The main contributions of this dissertation are summarized as follow : ( 1 ) an ilc approach combining feedforward with current feedback is developed based on optimal feedback control and the gradient method. a sufficient condition that guarantees the convergences is given for linear system. the procedures of designing the algorithm can employ lqr, h2 or h approaches to improve the convergence rate of learning in iterations
本文的主要成果有： 1 、在開閉環綜合迭代學習控制結構的基礎上，分析了利用梯度下降法設計前饋迭代學習控制器時，為保證演算法的收斂性，閉環控制系統應該滿足的充分條件，並依據提高演算法收斂速率的優化條件，給出了基於lqr 、 h _ 2和h等優化控制技術的迭代學習控制演算法的設計方法。They comprise therefore cardiac frequency, speed, slope, duration, power, number of series and repetitions, weight from sollevare
因此，運動負荷包括心率、速度、梯度、持續時間、功率、組數和重復次數、待舉重量。Loading grads is another non - structure coefficient influencing loading characteristics except loading frequency. the low grads characteristics are analyzed deeply by simulation, and found that applying structure invariance principle with acceleration compensation can reduce loading grads effectively. the dissertation also simulates and compares the systems with connect hole of different size, and founds that the size of connect hole has an optimized value
加載梯度是除了加載頻率之外另一個影響加載性能的非結構上的參數，論文作了大量的模擬分析來研究小梯度加載特性，得出了具有加速度補償的結構不變性原理可以有效的降低小加載梯度時的多餘力矩的影響;通過對具有不同的總壓力流量系數的系統的模擬比較，得出了連通孔的大小在不同工況下存在一個最優的值，其開度需要合理的選擇。分享友人