精度指數 的英文怎麼說

中文拼音 [jīngzhǐshǔ]
精度指數 英文
accuracy index
  • : Ⅰ形容詞1 (經過提煉或挑選的) refined; picked; choice 2 (完美;最好) perfect; excellent 3 (細)...
  • : 度動詞[書面語] (推測; 估計) surmise; estimate
  • : 指構詞成分。
  • : 數副詞(屢次) frequently; repeatedly
  • 精度 : precision; accuracy; degree of accuracy; precision accuracy; trueness
  • 指數 : 1. [經] (比數) index number; index 2. [數學] exponent
  1. This testing instrument ' s successful development, not only did we know fairly well before shooting range ball firing, but it can instruct manufacture of artillery, make assure the quality of every artillery, save a great deal fund

    坦克炮管靜態定向測試系統的研製成功,不但可以在靶場實彈射擊前做到心中有,而且能夠導火炮的生產,保證每門火炮的質量,節約大量資金。
  2. Plant endemism is the key problem in floristic study. analysis of endemism in a flora has significant implications in demonstrating floristic richness and diversity, the relationship between plants and their environment, and also in conserving biodiversity of the flora. in view of the situation that most of the past studies on endemism were qualitative, this study is the first tentative approach to the introduction of quantitative indices to the analysis of floristic endemism, with an purpose to push the study of endemism from qualitative to quantitative. four quantitative indices are introduced, i. e. level of endemism ( l ), coefficient of endemism ( c ), degree of endemism ( d ) and general index of endemism ( a ). mathematical formulae have been given to each of the above indices and explanations for them have been presented, and the scope of their use in floristic studies has been delimited and exemplified in this paper. the result shows that they are of good applicability. the proposed indices embody full information of plant systematics and plant geography. with the aid of qualitative analysis, the application of the proposed indices will improve the comparability and precision of endemism study in floristics

    過去有關特有現象的研究主要限於定性的分析,可比性和確性較差.該文嘗試引入特有現象的定量化標,以推動特有現象的分析研究從定性水平向定量水平邁進.所引入的4種定量化標分別是:特有水平、特有系、特有以及特有綜合.對每種量化標都給出了學表達式,說明了其區系學意義,例證和界定了這些標在植物區系分析中的應用,結果表明,它們有良好的適用性.這些標充分地包含了植物系統學和植物區系學的信息.結合定性分析,這些標的應用將增強植物區系研究的可比性,使植物區系特有現象的分析達到更確的水平
  3. This paper analyzes the factors affecting the controlling precision of sand compactibility system and sets up the dynamic model of regression coefficient between sand compactibility and water content. to prevent the insufficiency or excess of sand water content, the amount of the first addition is set as 80 % of the total water addition amount. after the first water addition, we adopt ar model to predict the stable value of sand compactibility to shorten the time mixing the sand. each time we add water, the correction coefficient is introduced to adapt to the change in the composition of sand. the experiment shows that the mathematics model not only makes the water content in sand reach the best range within shorter time, but also directs how the sand composition should be adjusted, which can better conform to the actual situation

    分析了影響型砂緊實率控制的因素,建立了型砂緊實率-水分回歸系的動態模型.為防止型砂水分不足或過量,將第一次加水量設定為總加水量的80 .第一次加水后,對型砂緊實率穩定值採用ar模型進行預測,以縮短型砂混制時間.每次加水后,引入修正系,以適應型砂組成的變化.實驗表明,該學模型不僅使型砂水分含量在較短時間內達到最佳范圍,同時可示對型砂組成進行調整,能較好地符合實際情況
  4. The second, the main work in the paper is discussed. they are include : the theory and character of electromagnetic leaking from a computer ; the theory of accumulation mean filter and pectination filter ; the analysis of synchronous signal precision, at 10 - 12 second level, for stably intercepting ; the technology requirement of receiver and data acquisition board for clearly displaying the images recovered from the intercepted data

    本文從計算機視頻電磁泄漏和字濾波器兩方面的基本理論出發,詳細論述了計算機視頻信息電磁泄漏的原理及特點,出視頻泄漏信息的頻譜是以行頻為周期的譜線;分析了重加濾波器和梳狀濾波器的性能;分析了視頻泄漏信息截獲的條件;推導出穩定截獲視頻泄漏信息需要對同步信號的控制在皮秒級;論述了清晰再現對接收機和據採集卡的技術要求。
  5. The designs of the pfd, digital filter ocxo and fractional - n counter in the frequency synthesizer unit are discussed, based on the pll theory. in order to improve the precision of pll, some design methods of pfd are given, and its feasibility is validated by the fpga hardware implement

    2 .在鎖相理論導下,第三章討論了頻率合成器設計中的鑒頻鑒相器、字濾波器、恆溫壓控振蕩器和分頻電路設計。為了進一步提高頻率合成的,文中給出了提高鑒頻鑒相器性能的一些設計思想,結合fpga的硬體設計驗證了其可行性。
  6. Through the above researches, such conclusions were drawn that in the course of fitting the semivariogram of the yearly annual mean rice water sensitivity index in yunnan, the fitting precision of ordinary kriging spherecial model is better than others ; range at the direction of 80. 5 degree is outstanding than others ; as for the precision of interpolation, ordinary kriging spherecial model is higher than others

    研究表明:雲南水稻多年平均水分敏感標變異函以普通克里金球狀模型擬合最優、 80 . 5方向變程最大、插值模型以普通克里金球狀模型插值較高。
  7. Abstract : based on the analysis of the mathematics models of saturation steam density and superheat steam density the paper states that the deviation of the detection on temperature highly affects the accuracy of intelligent flow totalizer. especially for saturation steam , the accuracy of the temperature detection circuit shall be designed higher than the accuracy of the instrument. thus a temperature detection circuit based on ratio method with high accuracy is introduced

    文摘:在分析飽和蒸汽和過熱蒸汽密學模型的基礎上出,溫檢測的偏差對智能流量積算儀的影響極大,尤其是飽和蒸汽,測溫電路的應設計為遠高於儀表的,同時引入一種基於比率法的高測溫電路。
  8. In this system, the movement of the step - electromotor is controlled by computer, and then the dial pointer is drove by the step - electromotor. at the same time, these images of the analog instrument are took by high precision ccd video, and then these images will be processed by the computer, using some image - processing algorithms such as image segmentations, threshold identification, image binarization, areas labeling, dial center - point identification, useful areas identification & abstracting, and areas thinning, etc. followed this, the dial pointer of the “ circle ” is able to be located. at last, the dial pointer position will be recognized by the computer

    本系統由計算機控制步進電動機的運動,進而驅動針式儀表表針的運動,並且通過高ccd攝像機實時獲取表盤圖像據,同時進行表盤圖像的相關處理,包括圖像分割,閾值確定,圖像二值化,區域標記演算法,圓心擬合,有效區域識別提取,區域細化等,最終快速識別出表盤針所處位置;最後,根據國家針式儀表類檢定規程所制定的演算法計算出該儀表的相關誤差,檢定針式儀表的各種,通過這些據判斷該儀表是否合格,列印該儀表的檢定結果報表。
  9. Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications

    本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術,主要研究成果包括以下幾方面:首先,建立了利用兩顆地球靜止軌道衛星進行短基線定向的學模型,分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的進行了詳細分析,學模擬結果表明在高緯地區線性化解析法由於俯仰角誤差分析略有下降而不太適合;在分析定向確定性影響因素的基礎上,提出了雙星定向衰減因子odop的概念,揭示了雙星定向誤差特殊表現的內部機理,對實際工程應用具有重要的導意義。
  10. It is inevitable that some crane ' s parameter such as working temperature, actual span and so on will change because of the affection of install precision, the change of working condition and actual needs. as a result, it will affect the tension force of carrying cable and carrying capacity. and the tension force and carrying capacity have close relation to the performance of cable crane and operational security

    由於纜索起重機工作環境和性質的特殊性,安裝的影響、工作環境的變化以及實際工作的需要,不可避免的會引起的各項參的變化,如工作溫,實際的跨等,造成與設計參之間的差異,從而影響承載索的張力和承載能力,因而直接關繫到起重機的性能和生產的安全性,因此論文研究這些因素變化對張力和承載能力產生的影響,分析張力及承載能力對各因素變化的靈敏,從而對生產實踐和安全生產作出有意義的導。
  11. Most complete wireless weather coverage available : high and low day temperature in celsius or fahrenheit, weather type icon and text, real feel ( rf ) temperature ( what temperature really feels like ), wind direction, gust and speed in mph, km / h or m / s, uv index ( the sun ' s ultraviolet intensity level ), amount of day precipitations in in, cm or mm, pressure, visibility and more

    最完整的無線天氣覆蓋可以利用:攝氏和華氏的溫高低,天氣類型圖標和描述,實際感覺到的溫(真正你感覺到的溫) ,風向,風力和風速,時速或秒速,紫外線(太陽紫外線強等級) ,降雨雪量確到英寸,厘米,毫米,壓力可見的描述,還要其他的嗎
  12. The computer acquires the image of dial gauge by high precision ccd video, after that the computer will process the dial gauge image by some image - processing algorithms such as image segmentations, edge searching, area segmentations and locating the pointer by the " circle ". at last the computer will recognise the dial pointer position and work out the precision of dial gauge in accordance with nation criterion of dial gauge. this study presents several optimum algorithms to realize quick recognition of the pointer and calibration lines of detected dial and improve the accuracy and real time quality of detecting

    本系統由計算機控制步進電動機的運動,進而驅動示表表針的運動,通過高ccd攝像機實時獲取表盤圖像據,同時進行表盤圖像的相關處理,包括閾值分割、邊緣檢測、圖像銳化以及區域分割和定心圓檢測等,最終快速識別出表盤針所處位置,最後根據國家示表類檢定規程所制定的演算法檢定出示表的各種,本系統所採用的圖像處理演算法運算量少,速快,從而大大提高了系統的實時性。
  13. The study on the auto - detecting system of analog measuring instruments presents several optimum algorithms to realize the quick recognition of the dial pointer and calibration lines of detected dial. by using these efficiency algorithms, both the accuracy and the real - time quality have been improved

    採用字圖像處理技術進行針式儀表的檢定可以大大提高檢定效率,提高檢定,減少人為因素干擾,使檢定過程更具客觀性,檢定結果更準確,因此具有廣泛的市場前景。
  14. In this paper, the drive theory of the large ratio friction transmission is studied ; a new type elliptical cam wave generator is designed ; the large ratio friction transmission prototype is designed and manufactured ; based on the ansys finite element method software, structure of the elliptical cam is analyzed ; precision index of the manufactured large ratio friction transmission prototype, such as transmission accuracy, least step, stability of the least step, load capacity is measured by the absolute rotary encoder. by analyzing the measurement data and research content, it is think that the new elliptical cam wave generator could overcome a good many problems brought by processing errors, facilitate size precision adjustments, input moment can be achieved in the form of a pure force couple importing ; through this study, " the large ratio friction transmission prototype " could apply in practical engineering basically

    本文研究了大速比摩擦傳動的傳動理論;設計了新型橢圓凸輪波發生器,設計製作了大速比摩擦傳動樣機;用軟體ansys對所設計的橢圓凸輪結構進行了有限元分析;用19位絕對式編碼器測試了大速比摩擦傳動機構的傳動、最小步距、最小步距的穩定性以及帶負載能力等各項標;對測量據和研究內容進行了歸納和整理,認為新型橢圓凸輪波發生器克服了加工誤差帶來的諸多問題,新型橢圓凸輪波發生器可以進行尺寸調整,能夠達到輸入力矩以純力偶的形式輸入;通過本項研究,基本可以使「大速比摩擦傳動機構」在工程中得以應用。
  15. Thermox d500 is manufactured from highly refined paraffin base oil combined with effective additives package to assist in keeping system clean and resist oxidation and thermal cracking

    熱佳力d500是由特別餾程處理的高粘礦物油與選添加劑調配而成。
  16. Airox zs is a premium vacuum pump oil manufactured from high vi base stocks after special water removed treatment combined with oxidation, rust inhibitors and other additives

    雅士zs系列為優質高性能真空泵潤滑油,由經過特別脫水處理的高粘基礎油和選添加劑調配而成。
  17. In order to realize the conversion and unification of the data in different datum frames, converting parameters through robust estimation is put forward when the precision index of the two different coordinates cannot be obtained

    針對在無法獲知兩個坐標系下公共點成果標的情況下,提出了利用穩健估計理論合理求解轉換參的一種方法。
  18. Items of check before acceptance of nc metalforming equipment have been summarized via introduction to testing of varieties of accuracy of such machines

    摘要通過介紹控鍛壓機床各種標的檢測,總結了控鍛壓機床的驗收項目。
  19. Comparing with conventional nyquist converters, - converters greatly release the requirements for high performance of analog circuit and precisely matched components. additionally, these converters exploit the enhanced speed, circuit density and low cost of modern vlsi technologies. currentlly, - adcs have been widely used for audio a / d conversion

    - adc採用過采樣噪聲整形技術實現高轉換,和傳統的nyquist率模轉換器相比,避免了對模擬電路性能標和元器件匹配的較高要求,並可充分利用現代vlsi的高速、高集成、低成本的優點,已成為音頻模轉換的主要技術。
  20. In the field of polymer solutions, a series of high precision measurements of the critical properties of polymer solutions near their critical points by his group has established scaling laws and resolved several long - standing disputes about the exact values of the associated exponents and the relations among them. the results are now benchmark data sets against which various theoretical models are tested

    在聚合物溶液的研究領域中,他領導的研究小組完成了一系列有關聚合物在臨界點附近的高測量。這些工作導致了一系列標律的建立並且結束了對有關標值的長期爭論。這些實驗結果現已成為驗證多種理論模型的基準資料。
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