weak flux 中文意思是什麼
weak flux
解釋
弱溶接劑-
But rather than extinguishing the magnetic field completely, the reversed flux patches created a weak field with a complex mix of polarities during the transition
但在過渡期間，這些反向通量斑塊並不會完全消除磁場，而是形成一個綜合了復雜極性的微弱磁場。 -
The results show that before the summer monsoon onset, the air - sea heat exchange near xisha area is weak, the vapor flux is small and the main trend is that the ocean is being heated ; while after its onset, the air - sea heat exchange is balanced roughly
結果表明：季風爆發前，西沙海氣界面熱量交換較弱，水汽通量較小，以海洋獲得熱量為主；季風爆發后，海氣界面熱量交換接近平衡。 -
In 1999, the dipole existed in between the okhotsk high and the depression in the north of northeast china, thus the okhotsk high became active and maintained, the subh was located to an area quite further south than usual. the high persisted in the east region of nw china, the cold air flowed to the mid - lower reaches of the yangtze river along the high. in the east region of nw china, air steam under troposphere was strong sinking motion, and formatted the negative vorticity region, the vapour flux divergence was divgence. lt was apparently that the rain could n ' t occur in the eastern portin of nw china. in 2000 year, okhotsk high was very weak or did n ' t exist in, there was high in the east asia - japan, the subh is located to an area further north than usual. in the east region of nw china, the trough maintained, air stream under troposphere was strong ascending motion, the cycolonic circulation was prevailing, the vapour flux divergence was intensive convergences the rain easy happened in the east areas of northwest china
4多梅雨1999年鄂霍茨克海阻塞高壓與我國東北北部低壓形成偶極子，使得阻塞高壓穩定少動，西太副高位置偏南，西北地區東部持續受高壓控制，冷空氣沿此高壓流經長江中下游地區上空；在西北地區東部對流層中下層氣流下沉運動較強，呈反氣旋渦度，水汽通量散度輻散，不利於西北地區東部降水。空梅雨2000年相反，鄂霍茨克海高壓減弱甚至不存在，東亞-日本為高壓，西太副高位置偏西偏北，西北地區東部處于西風槽中，對流層中下層氣流上升運動增強，盛行低壓環流，水汽通量散度強烈輻合，有利於降水生成。 -
When the southwesterly ( northeasterly ) moisture flux over southern china and its vicinity increased, then more ( less ) water vapor was transported from the low latitudes to the atmosphere over southern china, which resulted in strong ( weak ) atmospheric moisture sinks over the above - regions in southern china
華南中東部以及廣西北音隊湖南西部貴州東部地區水汽匯的強度異常與東亞上空水汽輸送異常導致上述地區垂直積分的水汽通量輻合的異常密切相關，當中國南方上空有西南（東北）風水汽通量距平，即西南風水汽輸送增強（減弱）時，則上述地區上空的水汽匯偏強（偏弱） 。 -
( d ) in the weak monsoon year, nwc lies in the northwest airflow region, west and south wind, as well as moisture transportation are remarkably reduced. except part of the first field, there is vapour flux divergenceon in nwc ( e ) in the strong monsoon years, the height field is low on the west and high on the east, west and south wind, and it ' s vapor flux transportation, are evidently boosted up. there is vapour flux conflurnce in the he first and sixth region
（ d ）弱夏季風年，西北區高度場西高東低，處于脊前西北氣流的控制之下，西風和南風明顯減小，水汽通量輸送也大大減少，除一區的甘肅河東大部（ 30 35 n ， 101 105 e ）存在水汽通量輻合外，其它地區為水汽通量輻散（弱的輻合） 。 （ e ）強夏季風年，西北區高度場東高西低，西風和南風明顯增強，水汽通量輸送同樣顯著增強，一、三區存在大范圍的水汽通量輻合。 -
Abstract : one of the unsolved problems of the high power application of high temperature superconductors is how to lower the energy dissipation induced by flux motion. due to the extremely high anisotropy, small coherence length and weak pinning potential, the mixed state phase diagram which is tightly related to the flux dynamics becomes very complicated. a brief account is given of the field induced crossover of criticalities of energy dissipation, which has been observed in our recent sensitive electromagnetic measurement
文摘:高溫超導體在強電方面應用的關鍵問題是如何克服磁通運動所造成的能量損耗.由於存在極強的各向異性、短的相干長度和小的磁通釘扎勢，因此與磁通運動緊密相關的混合態相圖變得很復雜.文章綜述了根據一系列靈敏的電磁測量所觀察到的磁場誘導的能量耗散行為的轉變 -
The bigger the diameter, the high the heat efficiency, but the weak the temperature increasing ability, length has less effect on the heat efficiency, tilt angle has less effect on the flow field and temperature field while it is larger than 30 degree, vacuum degree and emissivity have great effect on the flow field and temperature field while there is a great temperature difference between the liquid in the tube and the surroundings, the furring has less effect on the heat transfer but should be cleaned up in 3 - 5 years because of poor water quality, the higher the solar flux or the more the temperature difference between the liquid and the surrounding, the more the heat loss and the lower the heat efficiency
分析了各種因素對太陽能真空集熱管流場和溫度場的影響。直徑越大，熱效率越高，但升溫能力弱；長度對熱效率影響不大；傾斜角度大於30后，自然對流已經能夠充分進行，考慮以能夠吸收到最大太陽輻射為主；真空度和發射率對熱效率和溫度場影響很大，尤其是在介質溫度與環境溫度差異比較大時；水垢對傳熱影響較小但由於水質的問題應該被3 5年清洗一次；太陽輻射強度越大，介質溫度與環境溫度差異越大，熱損失越大，效率越低； 4 -
According to a real ac vf asynchronous dynomometer system, first step, the paper deducts the mathematic model of the system, and analyzes the system stability on the basis of the ? irst method ? of lyapunov stability, then draws the eigenvalues of the system under the situation of the variation of different parameters, and results in finding the changing regularity of the system stability caused by varitation of variant system parameter ; secondly, sets up a system simulation model in terms of a real power feedback ac vf asynchronous dynomometer system, and emulates different running states of the system, not only analyzes methods of adjusting parameters to improve the working performance in the field of weak flux of the system, but also proves the effectiveness of the methods via simulation ; at last, compares the simulation results of the model with the experiment results of the real system, and show the nearly correctness of simulation system, and also confirms the practical usage of the simulation system as an effectively assistant tool in the process of developing and design a real dynomometer system
首先根據實際系統工作原理推導出系統的數學模型，在系統數學模型的基礎上依據李雅普諾夫穩定性判別第一法進行了系統穩定性分析，繪制了系統不同參數變化時的系統特徵值變化圖，從而得到系統部分參數變化對系統穩定性的影響規律，為實際系統的參數設計提供了參考；然後又以系統數學模型為基礎，依據實際的電封閉交流變頻異步測功機系統建立系統模擬模型，模擬不同工況下系統運行情況，分析了改善弱磁區系統性能的某些系統參數調節方法，通過模擬證明了此類方法的有效性；最後將系統模型與實際系統的實驗結果進行了比較，驗證了模擬系統模型的基本正確性，也肯定了這一模擬系統在實際測功機系統設計中作為輔助工具的實用性。 -
In order to get a finite element formulation to analyze singular heat flux fields, the weak form of basic equations and boundary conditions describing the 2d heat conduction eigenproblems is derived for the sectorial domains in the vicinity of the interfacial crack tip
摘要為得到用於分析奇異熱流密度場的高效的有限元列式，針對不同材料中界面裂紋尖端的扇形區域，推導出二維熱傳導特徵解問題的基本方程和邊界條件的弱形式。 -
For hts maglev vehicle, cylindrical bulk superconductors with the thickness of 25mm are better to provide enough guidance force and keep enough levitation height when they are field cooled above the ndfeb guideway. the trapped flux ability of superconductors is influenced by the weak links and critical current density and can be reflected by the levitation force. it has no direct relationship with its density
超導體塊材自身的密度跟它的俘獲磁通能力之間並沒有直接的聯系，影響超導體俘獲磁通能力的是超導材料內的弱連接和材料的臨界電流密度，而超導體在一定外場下受到的懸浮力能夠在一定程度上反映出它的俘獲磁通性能。 -
First, we present the equivalent variatial formulations of the least - squares mixed method and prove the existence and uniques for the weak problems. on the basis of l2 - projections and raviart - thomas projections, we obtain the superconvergence of the least - squares mixed finite element approx - imations on uniform triangulations, where triangular mixed finite elements of the lowest order raviart - thomas spaces are used to approximate the flux p. in the second chapter, we briefly recall the standard and mixed finite methods for second order elliptic problems, and introduce a modified least - squares mixed method
作者首先導出了最小二乘混合元方法的等價變分形式，並且證明了變分問題廣義解的存在唯一性；在此基礎上，我們採用強一致三角形剖分，選取最低階的raviar - thomas空間對未知函數的通量進行逼近，利用l ~ 2投影和raviart - thomas投影，得到了插值投影和最小二乘混合元解之間的超收斂結果。
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