角放大率 的英文怎麼說
中文拼音 [jiǎofàngdàlǜ]
角放大率
英文
angular magnification-
Do some necessary calculations and decide on the general scheme of compton back - scattering imaging scanner to the real wall inspection. include the selection of radioactive source, the calculation of compton back - scattering beam, the calculation of the basic condition of finding out the different materials and the determination of some important parameters as well. 3
其主要內容包括入射源的選擇,散射粒子的理論計算,發現異物的最低條件計算以及系統的一些重要參數的確定,主要包括:放射源的選擇,散射角的確定,后準直器的形狀與尺寸,前準直器的尺寸,前準直孔的大小,檢測器的種類與型號,檢測器的效率等。The author thinks that from point of view of public relations, the policy of running dagong newspaper, namely " non - party, unselfish, refuse selling, not follow blindly ", is the idea of public relations of xinji dagong newspaper. the policy commands all the sense and actions of xinji dagong newspaper public relations. xinji dagong newspaper has strong consciousness to readers, consciousness of responsibility, consciousness of communication, consciousness of image, consciousness of harmonization, consciousness of being open, etc. with these consciousnesses, xinji dagong newspaper takes explicit, effective measures of public relations
作者認為:從公共關系角度看, 「不黨、不私、不賣、不盲」的辦報方針就是新記大公報的公關理念,它統率著大公報的所有公關意識和行動;新記大公報具有強烈的讀者意識、責任意識、溝通意識、形象意識、協調意識、開放意識等;在這些意識的驅動下,該報開展了目標明確、收效顯著的公關工作。In this paper, ansys, the software on finite element analysis, is made use of processing the static and modal analysis on the preliminary models and its " modified ones. by analyzing the results, we can conclude that the stresses on the components of the modified models are tended to equilibration and the location of the branches " brace can also influence stresses and translations on the branches. in addition, the values of the intrinsic frequencies on modified models " are larger than the ones on preliminary models, but the ranges of the frequencies on both models are almost same
傳統的弧形閘門的支臂結構基本上都是三角架式的,這主要是因為按平面體系進行計算的傳統設計方法忽略了結構的整體性及弧形閘門的空間結構特點,設計得比較保守,而實際上,將其改為a型結構也存在可行性,本文是利用有限元分析軟體? ? ansys對原模型及修改模型分別進行靜態和固有頻率的計算,通過分析比較其結果可知,支臂改為a型后會使閘門的整體受力趨于均勻,即原模型受力大的部件其應力變小,而原模型受力小的部件其應力會變大;而且a型支臂的支桿在不同的放置位置對支臂的應力和位移變化也有一定的影響。Combined with development of the products, the research emphasis in this paper is focus on the studies of the high - rate discharging performance at different temperature. 1. in the research of the discharge performance with high rate, the results of different effects including thickness of positive electrode, materials of hydrogen storage alloy, concentration of the electrolyte and separators
論文在實現研究目標的過程中,結合產品的研製,重點對電池的高倍率放電性能和溫度性能進行了研究:一、在提高電池大電流放電性能的研究中,比較了不同正極板厚度、不同貯氫合金材料、不同濃度電解液及不同材料隔膜等對電池大電流放電平臺的影響,並從電極反應動力學和多孔電極的角度分析了極板厚度對電池高倍率放電的影響。From the viewpoint of the interactive relationship between modern pension scheme and productivity, this paper observed the function and prospect of occupational pensions in china within a background consisting of population structure, labor productivity, and finance environment, utilized simulation and scenario analysis in actuarial models to estimate and analyze the effect of occupational pensions in the replacement rate of urban retired employees, then pointed out the magnification effect of occupational pensions in increasing the replacement rate and the higher efficiency in improving retirement income of urban retired employees. it also predicted the size expectation of occupational pensions during 2002 - 2010 in china, described the function of occupational pensions in developing the capital market and improving the labor productivity, especially emphasized the higher probability of occupational pensions to play the role of institutional investors compared with basic pension. in short, this paper proved the positive meaning of developing occupational pensions from micro - level and macro - level respectively, and brought forward corresponding policy suggestions
本文立足於現代社會養老保險制度與生產力之間的互動關系這一視角,把對我國企業年金作用與發展空間的考察置於包括人口結構、勞動生產率、金融環境等諸多因素的經濟大背景下,在精算模型中運用模擬( simulation )和情景分析方法,對企業年金對我國退休職工養老保險收入替代率的影響進行了定量分析和預測,指出了企業年金在提高退休職工收入替代率方面的放大作用,以及比基本養老保險在提高退休職工收入方面的更高效率;並對我國企業年金2002年- 2010年的預計發展規模做了預測,闡述了企業年金對我國發展資本市場和提高勞動生產率的意義,著重指出了企業年金較之基本養老保險基金充當資本市場機構投資者的更大可能性。This article according to the acquirement of the system parameters such as : temperature sensitivity 、 angle resolution 、 image forming time etc to design the type and diameter of the antenna ; the receiver type, integral time, rf gain, lpf gain ; the mode of calibration ; the sample frequency and program of the daq ; the scanning time, scan type, etc
本文根據系統溫度靈敏度、角解析度、成像時間等參數要求,對系統天線類型、直徑,接收機類型、積分時間、射頻增益、視頻放大器增益,定標方式,數據採集卡的采樣頻率、編程及驅動裝置的掃描速度、掃描類型等進行了詳細的分析設計。The experiment indicates that the laser sintering power, the thickness of sintering layer, the placement angle influence the surface precision greatly, and scanning space influence the dimension precision of the part greatly
試驗表明,激光燒結層厚度、製件擺放角度、激光燒結間距等對表面精度的影響大。激光燒結功率、製件的形狀尺寸等對製件尺寸精度影響大。After the introduction of basic model for the survey, this paper tries to relaxthe hypothesis of the basic model from such angels as considering the sale services, setting the type of assumed conjecture for rival ' s price change, transforming the form of competition, taking the information asymmetry and transaction cost into account, market uncertainty and change of demand elasticity etc., then draws out two mainstream conclusions as efficiency improvement and anti - competition effect
本文首先給出理論綜述的基本模型,從引入銷售服務變量,設定零售商的價格猜想類型,改變零售商的競爭方式,考慮信息不對稱和交易成本,以及市場的不確定性和需求彈性的變化等多個角度逐次放寬假設條件,歸納出效率改進或反競爭效應兩大基本結論。Power balance is necessary to icf, including the energy balance and pulse shape uniformity at the target. 90 percent of the output energy of " sg - ii " comes from its double - pass coaxial array main amplifiers, and pulse shape distortion caused by gain saturation also occurs mostly in there. therefore precise control of gain performance of the main amplifiers by avm ( angular variable mirror ) is the key to the precise power balance of " shenguang - ii "
「神光? 」裝置90的激光能量由同軸雙程主放大器提供,同時增益飽和效應產生脈沖波形畸變也主要發生在主放大器階段,因此應用組合式角變反鏡( avm , angularvariablemirror )獨立精密控制主放大器各路的增益性能是實現「神光? 」裝置精密化功率平衡的關鍵。The measurement system consist of computer, 16 - channel high speed data acquisition board, spark plug pressure sensor, crank angle signal generator, charge amplifier and oscillograph. the max acquisition frequency of this system is 1mhz
由通用微機、 16通道無相差高速數據採集卡、火花塞式壓力傳感器、角標信號發生器、電荷放大器、示波器組成的高速數據採集系統,最高總采樣頻率為1mhz 。Based on these foundations, we give a perfect scheme of the bbo opos : single pass amplification coefficient of the opg under different pump intensity is calculated ; collinear type - i and type - ii phase matching tuning curve pumped by the q switch nd : yag various harmonics as well as noncollinear type - i tuning curve are calculated in details ; the effect of the walkoff for the nonlinear effect coefficient and the group velocity matching are analyzed ; the acceptance angle in parametric process is calculated ; the numerical threshold of the bbo opo is calculated ; the process of the saturation and depletion of the pump beam are analyzed ; the relationship of the conversion efficiency and reflectance of output mirror are discussed ; various linewidth controlling methods are discussed ; the improvement of the beam quality applying the unstable cavity is discussed ; and the crystal bbo design is considered
在此基礎上,給出了一整套bbo - opo激光參數設計方案:計算了不同泵浦強度下的參量放大倍數;詳細計算了在nd : yag調q激光器各次諧波泵浦條件下的共線類和類相位匹配的調諧曲線,以及非共線類相位匹配調諧曲線;分析了走離角對非線性系數和群速匹配的影響;計算了參量過程的允許角;計算了bbo - opo的理論閾值條件;分析了飽和與泵浦光束的消耗過程;給出了轉換效率與超過泵浦閾值的倍數的關系;討論了轉換效率與輸出鏡反射率的關系;討論了線寬控制的各種方法;研究了利用非穩腔改善光束質量的方法;考慮了bbo晶體的設計。The magnification of any telescope can be changed very easily by changing the eyepiece. even for the largest telescopes, the magnification is seldom over 500, usually between 100 - 200. thus, large telescopes do not magnify more, they only show brighter and sharper images
其實大望遠鏡並不是把天體放得更大,而只是提供一個較光和較清晰的影像罷了倍率是物體視大小的放大比率,例如一個原本視角直徑為1角秒的物體,若放大后的視大小為30角秒,那麼倍率便是30倍。Avm is essentially a precision array film attenuator, which has a big diameter, high power load, continuous adjustment. the gain of each beam of the main amplifiers is controlled independently by the adjusting the angle of each cell of avm
Avm實質上是大口徑、高功率負載、透過率連續可調的組合式精密薄膜衰減器,通過調節avm各單元偏轉角度大小來獨立控制住放大器各路的增益。Based on the transfer - matrix method, the general expressions of equivalent four - terminal network parameters of varying section torsional horn are derived, the relations between frequency equation and both the rotational velocity amplification and that of the surface tangential velocity of stepped type torsional ultrasonic horn with transitional section of cosine - like type are obtained
摘要基於傳遞矩陣演算法,推導出了變截面桿扭轉振動時等效四端網路參量的一般表達式,研究了帶類餘弦過渡段階梯形變幅桿扭轉振動頻率方程與角速度放大倍數及外表面切向速度放大倍數等的關系。Battery is the only power source for portable equipment. in order to prolong the service time of these battery - operated equipments, ultra - low - power consumption is demanded. the main method that decreases the power losses is to higher the conversion efficiency and to lower the operating voltage
開關變換器內包含了帶隙參考電壓源、誤差放大器、頻率補償電路、三角波產生電路、 pwm比較器以及數字邏輯控制電路,此晶元採用聯華電子公司0 . 6微米cmos工藝。Modern cylinder pressure acquisition system is deeply affected by the advanced computer hardware technology. a / d card with the capabilities of high resolution, high sampling rate, non discrepancy and setting sampling rate at will is combined with a lot of excellent measuring equipment such as crank shaft angle encoder, charge amplifier, industrial control computer, etc. we use four type 6117a46 spark plug cylinder pressure sensors made by kistler corp.,
高速發展的計算機硬體技術深刻影響著現代氣缸壓力數據採集系統的發展,高解析度、高採集率、多通道、無相差和可以任意設定采樣頻率等特性的a / d板卡及一大批性能優越的相關測試儀器如轉角信號發生器、電荷放大器、工控計算機等。The standard bi - state magnetic bearing amplifier have some disadvantages such as high current harmonics, low reliability and the current mode switching for tri - state amplifier is expounded. the ba
從降低系統成本和提高可靠性的角度,提出了一種採用空間電壓矢量控制的開關功率放大器,對其進行了模擬研究,指出了這種功放的應用前景。Under this background, we successfully developed an engine fuelled with coal - bed gas and ignited by spark plug. the measurements for the prototype engine were thoroughly made, including the cylinder pressure, the rate of heat release, combustion duration, ignition delays, spark ignition angle, and the fluctuation of the cylinder maximum pressure
在此背景下,本文對經由s195柴油機改裝得到的燃用變組分煤層氣發動機進行了全面的測試和分析,包括缸內示功圖、燃燒放熱率、主燃期、點火提前角、火焰發展期以及最大壓力循環波動等。The results indicate that the fuel delivery advance angle corresponding to the lowest fuel consumption of diesel engine is as similar as that of e30 engine. with the increase of fuel delivery advance angle, nox emission enlarges and smoke reduces
結果表明: e30混合燃料發動機的最低燃料消耗率對應的供油提前角與原柴油機相當,隨供油提前角增大, e30的no _ x排放增加,但煙度降低。According to the structure characteristics and motion rules of the new type nursing robot, the close loop control system of this new type nursing robot is designed and made with the virtual instrument developing software labwindows / cvi, mcu, piezoelectric ultrasonic motor and high precision optical incremental encoder, which can make the robot reset and rotate by the predefined tracks. at the same time, in order to make the nursing robots used more widely where intensity, precision and price are not high, another control system is designed with the step motor, virtual instrument developing software labwindows / cvi, multi - function daq card pci1711, linear power amplifier. in order to use the nursing robots in acupuncture therapy, a simple finger is designed
在對其結構特點和運動規律分析的基礎上,本文以虛擬儀器編程語言labwindows / cvi為軟體開發工具,以單片機為控制核心,以超聲電機為驅動元件,以高精度光電編碼器作為速度和角位移檢測裝置,實現了機械臂的復位以及預定軌跡的閉環控制系統的開發;同時為適應一些強度不大、精度要求不高的應用場合,也為降低成本,簡化控制裝置,推動新型護理機械臂短期內應用推廣的需要,以目前應用較為廣泛、控制技術較為成熟的步進電機為驅動元件,用labwindows / cvi開發環境、 pci1711數據採集卡以及線性功率放大器開發了一套控制系統,實現了手臂的復位、勻速運動以及預定軌跡的控制系統;為推廣護理機器人在針灸理療中應用,設計了簡單的手指機構並利用labwindows / cvi開發環境,以及智能材料驅動器? ?層疊式壓電驅動器,進行了手指的抓取以及對驅動對象的轉動控制。分享友人