useful direction 中文意思是什麼

useful direction 解釋
有效方向
  • useful : adj. 1. 有用的，有益的，有效的，有幫助的。2. 〈俚語〉值得稱贊的，精通…的 （at）。adv. -ly ,-ness n.
  • direction : n. 1. 方位，方向；范圍，方面。2. 〈pl. 〉 指揮，指導；管理。3. 〈常 pl. 〉指示，命令，吩咐；用法說明。4. 導演；（樂隊）指揮。5. 寄發地址。6. 趨向，傾向。
  1. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  2. A value - base map may provide some useful description, but the principle - centered compass provides invaluable vision and direction

    有價值的地圖可提供有用的信息，但是嚴謹的羅盤卻為我們提供非常重要的指南和方向。
  3. By means of bending tests of three - point and four - point, complex fracture experiments were made for cast iron material with crack. the stress intensity factor and breaking direction angle of cast iron material were measured and compared with theoretical values. based on the research some useful conclusions are given for engineering design and application

    通過3點彎曲和4點彎曲實驗方法，對含有裂紋的鑄鐵材料進行復合型斷裂實驗研究，測試鑄鐵材料的應力強度因子、斷裂方向角，將實驗結果與理論值進行分析、比較，找出兩者之間的異同點，得到一些對工程設計及應用具有實際意義的結論。
  4. The air - flow field in the stripping unit can be adjusted easy by changing the rotation speed of fan which is benefit to reduce the grain losses, it was found during experiment that the cross - flow fan can diffuse some of mog ( material other of grain ) and diffuse it in a certain direction which is useful to satisfy the working condition for driver and lighten working load of the threshing unit of the combine harvester candidate and speciality : peng shengmin ; machinary design and theory supervisor : prof. zhang huiyou

    該裝置可以通過控制橫流風機的轉速，使裝置內氣流在有控制的情況下排出裝置外，改善了裝置內流場狀態，提高了裝置喂入口處的負壓，這對減少摘脫裝置的落粒損失，有著重要意義。由於橫流風機的除雜，可以減輕機器的復脫和清選負荷。安裝橫流風機后可以對裝置的出風口處灰塵進行有效導引，改善駕駛員的工作條件。
  5. We can use the mm5 model in definite time, definite area weather forecasting. we conclude that : : the moving route of this necw in its developing progress was direct - south along latitude, the cold air is rough, and just this made the rough vertical velocity ; the necw southern moving and conflicting with the west pacification sub - tropical high makes rough jet steam. the plenty south - west warm and wet air made by the jet stream gave the rainstorm demanded vapor ;. the rough vertical velocity by jet stream is a main reason in this rainstorm ; the mm5 model uses four - direction analysis data as its input, this avoids some errors occurred in observe and transfer, thus made the result more useful

    綜合分析認為： （ 1 ） 、這次冷渦在其發生發展過程中，其移動路徑是沿經圈直線南壓，攜帶的冷空氣勢力較強，形成槽后較強的垂直運動； （ 2 ） 、西太平洋副熱帶高壓偏北位置與東北冷渦南壓形成的急流軸，把源源不斷的西南暖濕氣流輸送到遼西地區，也就是急流軸的左前方位置，為這次暴雨的產生提供了充足的水汽來源； （ 3 ） 、低空急流不但為暴雨輸送水汽，其造成的較強的垂直環流也是產生強降水的一個主要原因； （ 4 ） 、 mm5模式以四維同化資料作為初始場，最大限度地避免了觀測誤差可能造成的積分不穩定，提高了模擬結果的參考價值。
  6. Number five : ' if you pull a face and the wind changes direction you ' ll be stuck that way. ' a useful fib to stop kids embarrassing their parents

    第5大謊言，如果你做鬼臉，而風向發生了變化，那麼你就會被風吹走。這個謊言能幫助父母教育孩子有文明的行為舉止。
  7. Provide some useful reference for allocating elements in the way of agricultural socialization, scale and specialization and promote to improve the management of agricultural enterprise. 4 ). discuss the direction and strategies of our macro - institutional reform

    本章從企業的基本概念入手，以契約理論、博弈論和學習型企業理論為基礎，綜合探討了現代農業企業的基本內涵、農業企業經營要素配置論特徵及類型，系統闡述了農業企業經營要素配置的理論框架。
  8. 3. study on vegetation succession : by using place to make succession, instead of using time, we have a useful try to hope to support helpful use for reference. on the other hand, we reveal actuality and stages of community succession of midland of taihang mountain to presume the succession direction in the future

    植被的演替研究：本文對用空間代替時間的方法進行演替研究時，選取樣地應遵循的原則進行了有益探索，以期對今後的研究提供有益借鑒，並且科學揭示了太行山中段地區的群落演替現狀和各群落的演替階段，對各演替階段今後的演替方向作出推測。
  9. By reason of enlarging useful chamber area, lightweight and according with the direction of wall material reformation, the frame structures with special - shaped r. c. columns are applied more and more widely in recent years

    鋼筋混凝土異形柱框輕結構體系因為增加了有效使用面積，做到了輕型節能適應功能變化需求，符合墻體改革方向，近年來在工程實踐中得到了越來越廣泛的應用。
  10. Based on the detailed investigate on the work of direction to take up an occupation and the valuable experience of many universities and institutes, we bring forward a suit of evaluation indexes for the work of university graduate " s employment, such as the wish of graduates for employment, the employer " s requirement, the rate of the employment obtained, the rate of supply and requirement, the rate of wishes and requirement, the degree of individual satisfaction, the degree of colony satisfaction and the degree of wishes altered, etc. these indexes can reflect the trend of the graduate " s notion for job choice and the requirement from the society, the state of the graduate " s employment with different major and so on. so these indexes are useful for the direction. using the modern computer and database technologies and obeying the rule of software energy, we have developed the management system for university graduates " employments and this software meets the requirement of scientific and high efficiency management

    本文在對高校畢業生就業工作進行詳細的調研基礎上，匯集了多所大專院校畢業生就業分配工作的寶貴經驗，提出了一套高校畢業生就業工作評估指標，如畢業生擇業願望、用人單位需求、一次就業率、供需比、願需比、個體滿意度、群體滿意度以及擇業願望調整度等多項指標，由這些指標，可以反映出畢業；生就業觀念和社會需求的變化趨勢，及各專業的就業情況、畢業生擇業願望與社會需求的符合度等等，從而為高校畢業生就業工作提供指導，並且利用現代計算機和數據庫技術，嚴格按照軟體工程的方法，經過可行性研究與計劃、需求分析、設計、編程、測試以及運行維護等階段，研製出了一套高校畢業生就業信息管理軟體，很好地實現了高校畢業生就業工作的科學、高效管理。
  11. Now, especially, did he find the description valentine had given of the interior of the house useful to him ; he arrived safely at the top of the staircase, and while he was feeling his way, a sob indicated the direction he was to take

    瓦朗蒂娜曾把房子里的情形象他描述過，他這時尤其覺得那種描述對他的作用之大。他安全地到達了樓梯頂上，在那兒停了一停，而正當他遲疑不決的時候，一陣啜泣聲為他引導了方向。
  12. Spin - valve gmr is a member of gmr materials. it ' s not sensitive in a typical magnetic field intensity but it ' s very sensitive with the direction of magnetic field, and so it ' s useful in angular sensors

    自旋閥gmr是gmr巨磁阻材料的一種，它在一定的磁場范圍內對外磁場的大小不敏感，但對外磁場的方向很敏感，因而在開發角度傳感器上有一定的應用價值。
  13. Then analysis the testing data at the base slab of big bridge in yangtze river of badong comparing with calculating result. by means of this, conclude the principle of temperature field and thermal stress, summarize the effect of different crack control measures, propound some useful suggestions for worksite, show the direction for further more investigation at last

    對巴東長江大橋施工現場主墩承臺溫度、應力測試結果和計算結果的分析比較，總結了大體積混凝土溫度場和溫度應力變化的一般規律，討論了施工現場常用控制溫度技術措施的實際效果，提出了施工現場裂縫控制的一些建議。
  14. Karsts in studying area also have three models. finally, the author analyses the relationship between reservoir characteristics and oil - gas accumulation, points out the main direction of later exploration. the paper includes several fresh views that will be useful in later exploration

    同時研究了儲層特徵與油氣富集之間的關系，分析了未開發區油氣可能富集的有利地帶，指明了今後油氣勘探的主要方向，具有一定的廣度和深度，望能有益於今後的油氣勘探。
  15. This article emphasizes the theoretical development and application of advertising semiotics in china on the basis of dressing on the domestic advertising semiotics research venation, the advertising semiotics approximately idea was fixed in the limit, fresh visual angle of advertising semiotics theory research and actual application means were proposed, in the hope of improving the theoretical research of advertising semiotics, also cause this branch of learning by even more man ' s comprehensions, moreover advertising practice person can be offer with useful inspiration together with direction the advertising semiotics is a kind of new theory that is developed fast in the west the meaning analysis may promulgate out the advertising connotation as having specified research value, it still can be used to the advertising practice

    本文描述了廣告符號學在中國的理論發展與實際應用。在梳理了國內廣告符號學研究脈絡的基礎上，界定了廣告符號學的概念，提出了廣告符號學理論研究新視角及實際運用方法，以期完善中國的廣告符號學研究，充實廣告理論的學術研究陣地，也使這門學科為更多的人所了解，並能夠給予廣告實踐者以有益的啟示與指導。廣告符號學是一門在西方發展較快的新型的廣告理論研究學科，它對廣告的文本、意義分析不僅可以揭示出廣告的內涵，還可以應用到廣告的實踐操作層面上，因此具有一定的研究價值。
  16. The frame structure with special - shaped column excels in no prominence on the wall, enlarging useful chamber area, lightweight, according with the direction of wall material reformation

    鋼筋混凝土異形柱框架結構以其沒有柱棱、增加有效使用面積、輕型節能、符合墻體改革方向，近年來得到廣泛的應用。
  17. In this thesis, we achieve a test - bed of motion control based on dsp using tms320f240 evm, xds510 emulator, pc, ac servo driver, ac permanent magnet synchronic servo motor and two direction graph plotter etc. the thesis analyzes the influence that the dynamic characteristic and the change of parameter of the system cause contour error of the system, then adopts fuzzy adaptive pid control method, single neural cell pid control method and fuzzy - neural network control method, and introduces the influence that the control methods lead to dynamic characteristic and contour error of the system. finally some useful results are obtained by analyzing and comparing the control methods, and it is possible to make the combination of advanced control methods and high efficiency of dsp

    在此基礎上，分析了系統的動態特性和參數變化對系統輪廓誤差的影響，先後採用了模糊自適應pid控制策略、單神經元pid控制策略以及模糊神經網路控制策略，並詳細分析和比較了這幾種控制策略對系統的動態特性和輪廓誤差的影響，得出了一些有用的結論，以使先進的控制策略和dsp的高效數據處理能力的結合成為可能。
  18. On - board processing ( obp ) is an important direction in satellite communications, where on - board conversion from fdma to tdm is very useful in raising channel efficiency and decreasing cost of earth stations. basing on extensive research of the fdma ? dm conversion, this thesis proposes a new way for such conversion, i. e. fdma ? wtdm conversion, which is based on a china invention patent ? a time division multiplexing transmission technique for band - limited signals

    星上處理是衛星通信技術發展的重要方向，其中星上頻分多址至時分復用（ fdma - tdm ）多址/復用方式的轉換是一個研究熱點，因為它能用於構成一種通道利用率很高、地面站成本很低的fdma / tdm體制的衛星通信系統。
  19. Be specific ; be concrete. saying " i don ' t like this, " or, " something about this bothers me, " doesn ' t provide useful direction. give examples or show a sample of what you ' re looking for

    詳細的說明，具體的形容.一句」我不喜歡這個」或是」我總覺得這里有點不對」並不能給予你的工作人員一個明確的方向.起舉例說明或拿出類似你想要的樣品來加強你的意見
  20. Dwaine rieves, fda ' s acting director of medical imaging and hematology products, said, " the label ' s lack of a target has been viewed by some physicians as an important deficiency " and said the agency ' s goal is provide " a more useful direction " without waiting for future clinical studies to better address the question of what the proper target range should be

    Fda醫學成像和血液學產品的代理主任說道， 「醫生們認為在說明書上沒有目標性的血色素水平是一個重大缺陷」 ，並指出經銷商的目的是在不必等待將來的臨床研究的給出這一適宜目標范圍的前提下，提出更有效的用藥指導。
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