used to ( v-to ) 中文意思是什麼

used to ( v-to ) 解釋
過去經常
  • used : adj 1 習慣于〈作表語用〉。2 〈美國〉用過的，用舊了的，半舊的；精疲力盡的。vi 〈用法同助動詞，其後...
  • to : adv 到某種狀態；〈特指〉到停止狀態；關閉。 ★也常和動詞結合，略去其後賓語，而構成成語： The door i...
  • v :
  1. This paper recurred to the basic theory of rough set of data mining and under the direction of the frame of intelligent decision, the main theories include i ) the different methods of data mining on the base of rough set are used to deal with typical decision system namely consistent decision system and inconsistent decision system in order to carry through data reduction and rule distilment ; ii ) in the environment of dynamic increment database, the methods of data reduction to deal with the original data and increment data are discussed in the consistent and inconsistent decision system ; iii ) the method of data mining of rough set is analysized to treat with the attributes with priority ; iv ) on the base of basic rough set theory, the data analysis methods of amalgamation of rough set theory ; v ) and also the pre - disposal method to database is analysize

    本文從系統工程進行決策分析的角度出發，藉助數據挖掘技術中粗糙集的基本理論，在智能決策框架的指導下，研究了基於數據挖掘的智能決策理論及方法。主要理論包括：如何利用粗糙集對典型的決策系統即相容性決策系統和不相容性決策系統運用不同的數據挖掘方法進行有效的數據約減和規則提取；在增量動態的數據庫環境下討論了在典型決策系統中對原始數據和增量數據進行數據約減的方法；分析了帶有優先權屬性的粗糙集數據挖掘方法；以基本粗糙集為基礎探討了粗糙集擴展模型的數據分析方法；研究了粗糙集數據預處理方法。
  2. V only used to transliterate loan word, minority language and localism

    只用來拼寫外來語、少數民族語言和方言。
  3. The path - way controlling of neptunium in co - decontamination step of purex process, the extraction thermodynamics of amido podand and its usage in recovery of actinides from simulated hllw have been investigated. more than 95 % np were maintained in np ( v ) in 1a extractor and flowed into 1 aw, if enough amount of hno2 was added in feed adjustment and then hno2 scavenger ( urea ) was added before extraction. three kinds of amido podand were synthesized, and the extraction of lanthanides, actinides and some fission products were studied. one of them ( tbopda, n, n, n ', n " - tetrabutyl - 3 - oxa - pantenadiamide ) was used as extractant to recover actinides from hllw. the results of experiments show that more than 99. 99 % actinides were recovered from hllw and separated basically in groups. the main digests are as follows : 1

    鎿走向控制研究中通過調價階段加入亞硝酸、而萃取前清除亞硝酸的獨特辦法可以將大於95的鎿趕入1aw 。合成了三種酰胺莢醚萃取劑，研究了它們對錒系和裂片元素的萃取熱力學，通過條件實驗選擇了其中一種莢醚tbopda （ n ， n ， n 』 ， n 』 ?四丁基? 3 ?氧戊二酰胺） ，進行了從模擬高放廢液中分離錒鑭系元素的工藝研究，錒系的回收率大於99 . 99 ，並且基本上實現了錒鑭元素的組分離。其要點如下： 1
  4. High precision preloaded dual - v rolling guide ways are used to provide good rigidity

    機床導軌採用雙v型預加負荷，高精度滾動導軌，剛性好。
  5. The results can be used to accurately extract the nuclear matrix of the astrophysically significant 7be + e - - 7li + v reaction. the method we used may find important application in condensed matter physics

    這一結果可用於精確抽取在核天體物理中有重要意義的反應7be + e - 7li + v的原子核矩陣元。
  6. In the last part, an experiential formula for nondimensional thermal stratification height is obtained, which includes inlet temperature t, inlet velocity v, heat transfer of the wall body q and the distance of heat source l. in order to obtain a more realistic result, the ? model is used to simulate the airflow and the buoyancy item is treated by boussinesq hypothesis. the paper investigates the flow field of the displacement ventilation in an office by a numerical method

    兩方程湍流模型為基礎的壁面函數處理方法，對熱浮升力項採用了boussinesq假設，得到了收斂的溫度場、速度場分佈。在此基礎上，給出了熱力分層高度的計算方法，並分析了送風溫度、送風速度、圍護結構傳熱和熱源分佈等因素對熱力分層高度的影響。
  7. Three propositions are proposed based the vector base network. cognition of human being and vector base cognition model are compared, the corresponding connection is created. 7 ) the application for rubber mixing process is given : abnormal modeling samples first removed, svm is applied to build the discharge model to establish the rubber discharge condition, and long term practical production validated the discharge modeling method ; adopting dynamic rkrls and rsvm, mooney time serials is used to model and predict, which shows better prediction ability than rls ; using v

    7 ）將本文演算法在橡膠工業的密煉過程得到實際的應用:在排除異常樣本點的情況下，利用5vm的工業特性，進行排膠點的建模，獲得好的應用效果:利用動態的rkrls和rsvm演算法，通過對橡膠棍煉質量的門尼指標進行建模和預測分析，表明演算法具有較好的跟蹤預測性能;利用矢量基學習網路對密煉過程的門尼進行辨識建模和預報，獲得了較好的效果，從而實現了更好的門尼波動的控制。
  8. V meg - ohmmeter used to measure the insulation resistance

    伏兆歐表測絕緣電阻用
  9. The ic modulation circuits and microprocessor are used in the control unit. on the side of input of inverter, the maximum power point tracking of solar module is well realized by using a kind of thought of self - optimizing control ; on the side of output of the inverter, a kind of approximate optimum v / f control strategy is used in order to optimize the match between the output of the inverter and load of motor - pump

    在逆變器輸入側，採用自尋優控制思想實現太陽能電池最大功率點跟蹤（ mppt ） ；在輸出側，採用了v / f近似優化的控制策略，以優化逆變器輸出與機泵負載之間的匹配。
  10. Re - hplc was used to determine the contents of valtrate, didrovaltrate and acetovaltrate in the valeriana plant samples from different habitats, different parts and different collecting date, the results show that the contents of three valepotriates in valeriana jatamansi, v. officinalis, v. officinalis var

    Exkom進行了較系統的生藥學研究，包括文獻查考、藥源調查、原植物鑒定、性狀鑒定、活性成分纈草素、二氫纈草素和乙酰纈草素的含量測定與比較分析。
  11. The matlab program is used to reconstruct the image of objects and by several ways of digital image - processing such as band - pass filtering and v - filtering, the quality of reconstruction image is greatly improved

    利用帶阻濾波和v型濾波等數字圖像處理方法削弱了零級衍射斑的影響，提高了再現像質量。
  12. A self - made device used to measure the hydrogen release curve ( v - t ) of coated tih2 / and tih2 was founded, and the results show that the hydrogen released characteristic of coated tih : had been improved and hydrogen released time had been delayed

    利用自製的釋氫試驗裝置，測定了tih _ 2包覆劑的釋氫曲線（ v - t ） ，並和未包覆的進行了比較，證明包覆對改善tih _ 2的釋氫特性，延遲釋氫時間確有效果。
  13. Finally, the rules used to design the induction motor and set the inverter v / f curve are summarized to improve the stability of the system movement in the forth part of the dissertation, three measures are brought forward to eliminate the system low frequency oscillation. the first measure adopts pulse based dead time compensation to suppress the oscillation. as second measure, considering the motor and inverter as an integration, the discontinuous space vector modulated strategy named dpwm3 is proposed for the first time to suppress the oscillation

    措施一是在總結常用死區補償方法的基礎上，提出脈沖為基礎的死區時間補償法（ pbdtc ）對死沈陽工業大學博士學位論文區進行補償，抑制系統的低頻振蕩;措施二是從逆變器與電機的機電一體化配合更加完善的角度，首次提出採用不連續空間矢量調制策略dpwm抑制系統的低頻振蕩;措施三是通過對系統中電機參數的調節，達到抑制系統低頻振蕩的目的;最後進行了實驗驗證。
  14. Very recently, schiller and muether at tubingen university suggested a new decomposition approach of the dbhf g matrix, and used to calculate the nucleon self - energy. they, sepa rate the g matrix into a bare nucleon - nucleon interaction v and correction term a g. the projection method is only applied to the correlation term a g, which is parameterized by four pseudo - mesons. then the nucleon self - energy in the dbhf can be calculated with the g matrix in the relativistic hartree - fock approximation

    裸相互作用部分，即單玻色子交換勢v對核子dirac自能結構的貢獻可以通過相對論hartree - fock方法得到，只把關聯部分用投影方法處理，並參數化為四種具有無窮大質量贗介子的交換，耦合常數與質量的比值是常數，從而關聯部分g對核子自能的貢獻也可以通過相對論hartree - fock方法求得。
  15. A 4 - tuple ( v, f, h1, h0 ) is used to express the waveform of a signal line l in a period. the output tuple calculating method for all elementary gates is given

    本文採用一個四維立方（ v ， f ， h _ 1 ， h _ 0 ）來表示信號線在某一時間段內的波形並給出了所有門電路的輸出立方計算方法。
  16. At first, the generating mechanisms of four kinds of wake features are studied in the thesis. we have simulated the features of ocean surface waves, kelvin wake, narrow v wake, turbulent wake, vortex wake, and internal wake. the kinetic equation of kelvin wake have been analyzed and improved, which can be used to calculate the kelvin wake of a submerged moving body

    論文首先研究了四種常見尾跡特徵的產生機理，模擬得到了海面、 kelvin尾跡、窄v尾跡、湍流和渦流尾跡以及內波尾跡特徵；改進了kelvin尾跡的動力學模型，使之能夠計算運動物體下潛后的kelvin尾跡波高分佈。
  17. The equivalent cavity model is used to deduce the threshold condition of the ecld, and the expression of the threshold carrier density n ( v ) when ecld is tuned to oscillate at different frequencies has been obtained. using the expression of n ( v ) and the carrier dependent refractive index, the simple basic equation describing the bistable characteristics has been derived after choosing an appropriate reference frequency nf

    通過建立等效腔模型來推導外腔半導體激光器的閾值條件，得到ecld在不同頻率v振蕩所需的閾值載流子密度n （ v ）表達式，利用該表達式及相關的折射率表達式，在選擇合適的參考載流子密度n _ f后，導出了一個描述雙穩所需的基本方程。
  18. In this paper, the high frequency c - v, the annihilation of slow positron beam and the infrared reflectance techniques were used to study the property of interface in sio2 / sic, the defects in sio2 and their physical characteristics

    首先使用高頻c - v測試技術，在有光照和無光照的條件下，對p型和n型sio _ 2 sic的電容-電壓特性作了研究。
  19. The data formats of optical design software ( code v ) and optical cnc machines are investigated. based on the function of optical design software that can output documents with file type of txt, we developed the software in visual c + + used to control optical manufacture process. the software can find parameters of curve surfaces from the documents, handle the data stream of optical design software, the technological parameters of optical manufacture machines and surface error data of talysurf, and simulate the manufacture process

    研究光學設計軟體（ codev ）和光學cnc製造設備的數據格式，利用光學設計軟體的文檔輸出功能，採用vc + +編制一個能從上述文件中自動發現曲面方程的介面，處理光學軟體數據流、光學設備工藝參數以及輪廓儀的面形檢測數據，模擬加工過程，生成用於光學加工的控制代碼實現非球面的銑磨和拋光，實現光學cad cam一體化製造。
  20. By means of analyzing the static and dynamic data dependencies between the statements on [ v, and constructing predicate slices and input dependency sets, this method linearizes the predicate functions with linear arithmetic representations. therefore it can only be used to generate test data for white - - box testing

    該方法通過分析w上各語句之間的靜態、動態數據依賴關系，構造謂詞片和輸入依賴集，用線性算術表示對謂詞函數進行線性化，僅能夠用於白盒測試數據的自動生成。
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