梯度的變化 的英文怎麼說

中文拼音 [debiànhuà]
梯度的變化 英文
change of gradient
  • : Ⅰ名詞1 (梯子; 樓梯) ladder; stairs; steps; staircase 2 (姓氏) a surname Ⅱ形容詞(形狀像樓梯的...
  • : 度動詞[書面語] (推測; 估計) surmise; estimate
  • : 4次方是 The fourth power of 2 is direction
  1. To corner feature, both gradient magnitude change and direction change of gradient vector are discontinuity in a local image neighborhood, hence gradient - direction variation and gradient magnitude are used as another decision rule of the corner detection to improve antinoise

    為了提高抗噪聲,根據角特徵不僅灰是不連續,且相對周圍其他點方向也是不連續,提出利用幅值作為角特徵檢測另一個準則。
  2. The point of singular signal ' s conjoint pixel always changes acutely in its gray - level value. the gray - level distributing gradient of conjoint pixels can show this change

    而信號奇異點或突點往往表現為相鄰像素點處值發生了劇烈,我們可以通過相鄰像素灰分佈來反映這種
  3. Bum severity is also affected by the topography. the basic rule is that with the increasing of slope and elevation, the burn will become much severer. but to the aspect, it was contrarious ( excluding the nonaspect )

    火燒強隨地形因子梯度的變化,其基本規律是隨坡、海拔增加而減小,而隨坡向增加而增加(無坡向除外) 。
  4. The result of dca ordination shows that diffirent plant communities and their distributing area vary with the environmental grads in the ordination graph when the first axis of dca denotes altitude change and the sencond axis of dca denotes change of water equivalent in the soil

    Dca排序結果表明, dca第一軸反映海拔, dca第二軸表示土壤含水量,隨著環境,不同植物群落在排序圖上也有各自分佈范圍。
  5. Abstract : the restoration of the riparian vegetation disturbed by human activities is one of the hotspots of watershed ecology. through interpreting the images of remote sensing in 1985 and 1999, the basic information of forest resources of lushuihe forest bureau, which is a typical forest area of changbai mountain, was obtained with support of gis. by dividing land covers of lushuihe area into 10 types ( water body, residential land, stump land, farming land, wetland, mature conifer forest, midlife conifer forest, mature broadleaf forest, midlife broadleaf forest, and man - made young forest ) and dividing the riparian zone into four buffers ( in turn, 1000, 2000, 3000, 4000 m away from the river ), the changes of riparian forest resources during 1985 - 1999 were analyzed. the results showed that the deforestation intension has obviously decreased and the whole environment has been evidently improved, but the riparian ecosystem was still flimsy. in buffer 1, 2, 3, the area of midlife conifer forest increased largely, but the areas of other types of land covers all decreased. midlife conifer forest had a comparatively good status in the three buffers. in buffer 4, midlife conifer forest, mature conifer forest, and mature broadleaf forest formed a forest - age rank that is helpful to stabilize the forest ecosystem and exert its functions. area percentage of wetland decreased in buffer 1, buffer 2, and buffer 3, even in buffer 4 in which forest ecosystem rehabilitated comparatively well, so protecting and rehabilitating wetland is a very difficult task

    文摘:本文對兩期遙感圖像進行解譯,並在gis支持下提取露水河林業局主要河流兩岸各緩沖區森林資源信息,經分析得到各類地物在1985年及1999年趨勢.結果表明:在河流沿岸對森林採伐強1999年較1985年明顯減小,整體生態環境較1985年有所改善.在緩沖區1 , 2 , 3除中齡針葉林大幅增加外,其它地物類型面積均減少,由此可以看出,在這三個緩沖區內針葉林得到了較好恢復.在緩沖區4內,中齡針葉林、成熟針葉林、成熟闊葉林形成一個林齡隊,有利於森林生態系統穩定與功能發揮,十五年間緩沖區4受到干擾相對較小.濕地數量在四個緩沖區內均有所減少,雖然在緩沖區4內森林生態系統恢復較好,但濕地面積仍有所減少,說明保護及恢復濕地資源是一件非常艱巨任務,必須引起高重視.圖5表2參12
  6. The restoration of the riparian vegetation disturbed by human activities is one of the hotspots of watershed ecology. through interpreting the images of remote sensing in 1985 and 1999, the basic information of forest resources of lushuihe forest bureau, which is a typical forest area of changbai mountain, was obtained with support of gis. by dividing land covers of lushuihe area into 10 types ( water body, residential land, stump land, farming land, wetland, mature conifer forest, midlife conifer forest, mature broadleaf forest, midlife broadleaf forest, and man - made young forest ) and dividing the riparian zone into four buffers ( in turn, 1000, 2000, 3000, 4000 m away from the river ), the changes of riparian forest resources during 1985 - 1999 were analyzed. the results showed that the deforestation intension has obviously decreased and the whole environment has been evidently improved, but the riparian ecosystem was still flimsy. in buffer 1, 2, 3, the area of midlife conifer forest increased largely, but the areas of other types of land covers all decreased. midlife conifer forest had a comparatively good status in the three buffers. in buffer 4, midlife conifer forest, mature conifer forest, and mature broadleaf forest formed a forest - age rank that is helpful to stabilize the forest ecosystem and exert its functions. area percentage of wetland decreased in buffer 1, buffer 2, and buffer 3, even in buffer 4 in which forest ecosystem rehabilitated comparatively well, so protecting and rehabilitating wetland is a very difficult task

    本文對兩期遙感圖像進行解譯,並在gis支持下提取露水河林業局主要河流兩岸各緩沖區森林資源信息,經分析得到各類地物在1985年及1999年趨勢.結果表明:在河流沿岸對森林採伐強1999年較1985年明顯減小,整體生態環境較1985年有所改善.在緩沖區1 , 2 , 3除中齡針葉林大幅增加外,其它地物類型面積均減少,由此可以看出,在這三個緩沖區內針葉林得到了較好恢復.在緩沖區4內,中齡針葉林、成熟針葉林、成熟闊葉林形成一個林齡隊,有利於森林生態系統穩定與功能發揮,十五年間緩沖區4受到干擾相對較小.濕地數量在四個緩沖區內均有所減少,雖然在緩沖區4內森林生態系統恢復較好,但濕地面積仍有所減少,說明保護及恢復濕地資源是一件非常艱巨任務,必須引起高重視.圖5表2參12
  7. 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大小,確定不同訓練樣本對能量函數貢獻,來抑制含高噪聲干擾樣本對網路訓練不良影響,從而增強訓練魯棒性,提高網路訓練收斂速; ( 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,提高了網路訓練精; ( 3 )在採用下降演算法對權值進行調整基礎上,通過將學習速率設為訓練誤差及誤差特殊函數,使學習速率依賴于網路訓練時誤差瞬時而自適應,從而可以克服基本bp演算法容易陷入局部極小區域弊端,使訓練過程能夠很快「跳出」局部極小區域而達到全局最優。
  8. Physiological and biochemical changes in epiphytic bryophytes under different air pollution levels

    大氣污染下樹木附生苔蘚植物生理生指標
  9. In the summer stratified water column, the deeper the maximum depth of food distribution is, the stronger the dvm is performed ; the increase of the gradient of temperature in the thermocline layer can decrease the magnitude of the dvm and form the thermal barricade to the copepod ; the effects of the predation pressure on dvm is complex. on the one hand, the variations in the distribution depth of the predation pressure vs. the thermocline layer or the depth of the maximum food can modify the dvm patterns of the copepod. on the other hand, different predation pressure induces different dvm patterns

    在夏季分層水體中,食物最大分佈深越大,動物向下遷移也越大;溫躍層增大可以減小動物遷移,成為橈足類垂直遷移屏障;捕食壓力對垂直遷移影響較復雜,一方面,捕食壓力分佈深與溫躍層或食物峰值相對位置能夠改橈足類垂直遷移模式,另一方面,捕食壓力強不同,橈足類垂直遷移也不同,捕食壓力越大,遷移越大,當捕食壓力增加到一定程,橈足類停止向上遷移,大部分時間呆在水體深層,可能進入捕食壓力引起「滯育」狀態。
  10. The saffman force does not affect the axial velocity of the flow, while it change the concentration of the particle. the gas - particle two - phase flows in the present of temperature were also numerical simulation

    討論了絕熱、有溫差和添加熱泳力三種情況下兩相流場,分析了溫、湍動能、軸向速和顆粒濃
  11. The first axis of dca ordination reflects a synthetic environmental gradient, positively correlated with precipitation, humidity, heating, primary productivity, and potential evaporation etc. the second axis of dca represents changes in altitude and longitude

    Dca排序第一軸表現了一個綜合環境,即從左到右,降水、濕、熱量、初級生產力、潛在蒸發量逐漸增強, dca第二軸反應了海拔和經,即從上到下,海拔降低、經增加。
  12. It is because the clinker is distributed much more in tensile area which bears more stress. for example, with linear and parabolic component gradient variation of aggregates, linear component gradient variation of aggregates reinforces higher than parabolic variation

    骨料分佈時富熟料側分佈於受拉區,承受較大應力,使得總體強上升,尤其抗彎強較大。
  13. 2 ) fourier amplitude spectrum analysis : ( 1 ) the fourier amplitude spectra decrease with the increment of depth ; and the components of fourier spectrum become complex in near - surface. ( 2 ) the fourier amplitude decrease faster in shallow soil level, and smaller in deep soil level. ( 3 ) compared with the deepest bedrock fourier spectrum, spectral components of higher than 5 hz decrease with depth decrease

    2 .地震動傅立葉振幅譜沿深規律( d隨著深增大,傅氏譜振幅逐漸減小;越接近地表傅氏譜頻譜成份越多,形狀越復雜;傅氏譜振幅值在淺層沿深下降較大,在深層下降較小; 「土層/基巖」場地基巖內_匕下兩測點地震動頻譜沿深幾乎不,傅氏譜十分相似; d基巖以上土層測點,高於shz高頻成分減少。
  14. The coupled turbulent flow field and temperature field are simulated by finite element method ; the influence of casting speed on the turbulent flow field and temperature field in the melting bath and the interaction between those two field are analyzed ; the variation tendency of the heat flux intensity between the melting bath and casting roll and law of variation with changes of casting speed in the process of solidification are given ; a comparison between the simulation results and experimental results demonstrates their good agreement ; and the mechanism of the heat flux variation is identified by analysis on the temporature gradient and development of solidification within the melting bath and its influence on the variation of the heat flux intensity

    採用有限元法模擬了雙輥鑄軋不銹鋼過程流熱耦合問題;分析了鑄軋速對熔池內流場、溫影響以及流場與溫場之間相互影響;給出了凝固過程中熔池與鑄軋輥之間熱流密趨勢及隨鑄軋速規律,並把此模擬結果與試驗結果相比較,吻合較好;通過熔池內溫場及溫分析了熔池內凝固發展及其對熱流密影響。
  15. 3 ) a custom filed function module was complied to study the influence of non - dimensional mass flowrate changed with time in stair shape on flow and heat transfer inside rotator - stator cavity with axial inflow and radial outflow. average nusselt number takes on a sharp up - down process when the mass flowrate changes from stabile status as to the following change of flowrate, the average nuselt number changes greatly in the initial stage and then changes gradually

    ( 3 )自編用戶程序模塊,研究在軸向入流、徑向出流轉-靜盤腔中,無量綱流量隨時間呈階型改對盤腔流動和換熱影響。當流量從某個穩定狀態改時,轉盤上平均努謝爾數會產生一個明顯上升再降低過程;在每一次流量改初始階段,平均努謝爾數存在一個較大幅
  16. In this part, response spectrum and fourier amplitude spectrum are studied, the main results are as follows : 1 ) response spectrum analysis : a ) absolute acceleration response spectrum ( sa ) : ( 1 ) in general, response spectrum decrease with depth, for m < 4. 5, the shape and the predominant period of each response spectrum in different depths are similar : the variation of spectra with depth focus on near - surface level ; the normalized spectra are similar to each other, except the predominant perk value in middle depth of some earthquakes is higher than other depth

    地震動反應譜沿深規律( l )加速反應譜( s 、 )沿深規律一般,加速反應譜( s 。 )隨深增加而減小。震級較小時,不同深各測點反應譜形狀很相似,卓越周期基本一致;淺層處反應譜沿深較大;深層處反應譜大小比較接近;強震時,反應譜形狀在短周期有較小差別,長周期逐漸接近。
  17. In this part, pga, pgv and pgd are studied, the main results are as follows : 1 ) in general, pga decrease with depth and can reach maximum at surface ; the pga ratio with depth of downhole / surface is affected by magnitude and ground pga value, the bigger the magnitude and pga value, the smaller the pga decrement with depth ; the decrement with depth is much more significant in near - surface than that in deep downhole

    加速峰值沿深與地震大小和場地條件有關。對于土層場地,一般說來,隨著震級和地表pga增大,加速峰值沿深下降減小。對于「土層基巖」型場地,基巖面處水平分量約是地表1 3 . 7 ,豎向分量約是地表1 3 . 2 。
  18. The characteristics of land use change in this area are increase of arable land, urban construction and residents in rural areas and considerable decrease of natural grassland, furthermore the trend of land use type reducing to one occurred. the spatial change of land use structure shaping gradient from along the coast to the inland is one aspect of character of land use change

    土地利用特點是耕地、城鎮建設用地、農村居民點用地增加,天然草地大量減少,土地利用類型有向單一發展趨勢,土地利用呈現出明顯由沿海向內陸遞
  19. 2 ) the variation of pgv and pgd with depth is similar to that of pga. besides, the decrement with depth of pgv is smaller than that of pga. and pgd smaller than pgv

    2 .地震動峰值速( pgv )和峰值位移( pgd ) : pgv和pgd沿深特點與pga相似;只是pgv沿深下降小於pga ,且pgd沿深小於pgv 。
  20. According to the variation of gradient pressure structure can be divided

    根據地層壓力梯度的變化可以劃分地層壓力結構。
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