weak variation 中文意思是什麼
weak variation
解釋
弱變分-
Parametric active contour model to deal with automatic segmentation of weak edge medical image. based upon analyzing balloon force model, a minimum variation snake model is proposed and successfully applied to segmentation of weak edge medical image. in the model, variable force incorporating the information of foreground and background regions replaces constant force in the balloon snake model
高斯力和氣球力等傳統的參數活動輪廓模型難以處理弱邊界醫學圖像自動分割問題，在氣球力snake模型基礎上，提出最小方差snake模型，該模型將氣球力snake模型中的恆定氣球力修改為包含區域信息的變力，以目標和背景兩區域具有最小方差為準則，引導輪廓曲線運動。 -
The long distance transport of pollutant from the direction of se, ene and etc, has some influences to the variation of surface o3 over waliguan, due to the short life of precursors, and the long distance between two sites as well as the weak photochemical reaction over this area, the influence of wind direction is not so important
（ 7 ）在se 、 ene等東北方向上污染物（ no _ x等）的長距離水平輸送對瓦里關地面o _ 3具有一定的影響。但由於o _ 3前提物在大氣中的壽命較短，兩地又相距較遠，而且瓦里關地區光化學反應很弱。因此，水平風向對地面o _ 3影響不大。 -
Its interannual variation ' s main period is about 4 ~ 5a and the 7 ~ 8a ' s period exist too ; the interdecadal variation ' s main period of the australian high is about 15a. the interannual variation of australian high ( aah ) has correct correlation with antarctic oscillation and enso, and the enso ' s 4a period has the most important influence on the aah. ( 2 ) when the ah becomes stronger, the members of the whole aamcs are stronger following it. that is to say, in the years that the ah is stronger ( compared to the weak years of ah ) and on the horizontal circulation, the members of aamcs, including the ah, the cross - equator flow ( cef ) between 100 and 160 e, the south china sea south - west monsoom ( ssm ), the south sea monsoon rough, the tropical easily flow, subtropical high ( sh ), the mei - yu front, the mid - latitude effect, become stronger, and their positions are more southward ; in the meridional - right circulation, there are five circulations including classic monsoon meridional - cirle circulation and hadley circulation that become stronger in the strong years of ah than in the weak years of ah
本文採用ncep ncar再分析月平均的全球海平面氣壓場、高度場、海表溫度場、高雲量和cmap全球降水資料，以及中國160站逐月降水資料，分析了1948 2002年期間澳大利亞高壓（以下簡稱澳高）的年際和年代際變化以及澳高年際變化對亞澳季風環流系統的影響，結果顯示： （ 1 ）澳高存在明顯的年際和年代際變化，澳高年際變化以4 5年的周期變化為主，同時兼有7 8年左右的周期，而澳高的年代際變化則以15年左右的周期變化為主：澳高年際變化同時與南極濤動和enso有正相關，並且enso的4年左右的周期變化對澳高年際變化影響最大。 -
Regional photochemical reaction is weak over this area, to a great extent, the atmospheric background condition influences to the variation of surface o3, tthe variation of vertical wind speed is significant to surface o3, from seasonal distribution of vertical wind, it appears upward air current in winter, spring and autumn, repectively, while it is mainly downward in summer, it is favorable to the o3 transport from stratosphere layer. at walilguan, the variation of humidity impacts a little on surface o3, the relationship between surface o3 and wind speed is relatively complicated, by correlation statistic analyze, it is sure that the wind speed is not one of the important factor
（ 2 ）瓦里關地區局地光化學反應較弱，地面o _ 3在很大程度上受大氣背景狀況的影響； （ 3 ）垂直風變化對地面o3日變化影響較大，從垂直風季節分佈看，春、秋、冬三個季節為上升氣流，而夏季下沉氣流則很旺盛，這種分佈有利於平流層o _ 3向下的輸送； （ 5 ）濕度對地面o _ 3貢獻並不明顯； （ 6 ）各季節水平風速與地面o _ 3之間的關系較為復雜，不同季節相關分析表明，水平風速並不是影響地面o _ 3變化的主要因子之一。 -
But setting of strengthened floor will result in the sudden variation of structural stiffness and internal force, and will come into being weal story. the yield mechanism will difficultly " story column, weak beam " and " strong in resistance of shear force, weak in resistance of bending moment "
在風荷載作用下，設置加強層是一種減少結構水平位移的有效方法；但在地震作用下，加強層的設置將會引起結構剛度、內力突變，並易形成薄弱層，結構的損壞機理難以呈現「強柱弱梁」和「強剪弱彎」的延性屈服機制。 -
The main works are listed as follows : ( 1 ) based on the excitation of bi - directional current pulse technique, a new measuring circuit for weak variation of resistance was proposed for electrical resistance tomography. traditional ac current source is n ' t adopted as the exciting source. through fast bi - directional current switching, the polarization effects are eliminated
該電路主要優點如下：該電路沒有採用傳統的交流電流激勵法作為系統的設計原理，而是通過快速的正負極性電流切換來削弱直流電流激勵時激勵電極的極化效應，使通過直流法來測量氣液兩相流的電阻微弱變化成為可能。 -
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。 -
The cmes traveling in the interplanetary space may also affect the ocrs intensity suddenly, such as the cme in jan. 1997. comparison with the fds, the ocrs sudden variation degree is less remarkable and often is very weak, so it is usually not easy to find such kind of variation. by using wavelet method, for the first time we
當cme在行星際空間傳播，還未到達地球時，在某一時刻cme有可能對地面某個、幾個臺站、或全球宇宙線強度造成突然的影響，從而使銀河宇宙線的強度發生突然的變化，但這種突變特徵往往是不明顯的，甚至根本看不出來，這時必須通過分析才能看出來。 -
( 3 ) from the viewpoint of physiology, its diurnal variation of transpiration rate seems to be a single peak curves which is consistant with the majority of trees in guizhou karst habitat, and whose maxium is 0. 1908g. g - 1. h - 1, that is smaller than that of low peak form and the weak water - consuming type
（ 3 ）在生理上，迷迭香的蒸騰速率日進程為單峰曲線，與喀斯特生境中的大多數樹種相一致，峰值為0 . 1908g . g ~ （ - 1 ） . h ~ （ - 1 ） ，比喀斯特低峰形低耗水型植物的峰值還低。 -
On the one hand, intra - annual distribution of runoff is extremely uneven with high concentration degree ; while on the other, the variation coefficient and annual extreme value little with weak increase tendency of annual changes of runoff volume but it is relative stable
分析結果表明：奎屯河流域徑流補給具有地帶性和多樣性特點，補給來源主要以冰川融水和雨水補給為主；年內分配極不均勻，集中程度高；年際變化相對穩定，變幅小，多年呈微弱增加趨勢。 -
Scientists have created ice at room temperature, potentially explaining a mysterious variation in the temperature at which clouds form. scientists have created ice at room temperature, potentially explaining a mysterious variation in the temperature at which clouds form. by exposing water to a weak electric field, they have produced what is being called " hot ice "
美國物理評論快報雜志及最新一期的新科學雜志日前刊登消息稱，韓國科學家已成功將室溫約20攝氏度下的水變成了冰，而這一試驗的成功可以解釋諸如水形成雲時溫度變化不一等自然現象。
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