零程差 的英文怎麼說
中文拼音 [língchéngchā]
零程差
英文
zero path difference-
This multi - purpose optical metering system had adopted the twyman - green interferometric system as its center, containing an advanced digital wave surface interferometry and a kind of homodyne interferometer displacement testing method with nanometer - sized capacity. at the same time, many wide - applied metering technology, for example, the diffracted field ( fringe ) measurement, co - focal lens system, optical fiber sensors and 4f ( focal distance ) space filter system which can embody the chief principle of fourier optics well, were combined into it successfully. this instrument can firstly offer and show modern optical testing method in the laboratory for majors of information processing, instrument science, measuring and testing technology and automatic technology
該多功能激光光電實驗系統以泰曼-格林干涉（ twyman - green ）光路作核心，包括先進的數字波面干涉技術和一種基於空間干涉原理的、納米解析度零差干涉儀位移測量方法，同時將多種新穎、工程實用價值高的測量技術和光路如衍射測量、共焦顯微技術、光纖傳感技術以及反映傅立葉光學基本光學原理的4f空間濾波系統也組合進去。Aspect the evaluation in the now available expressway construction project management is chiefly concentrated at economy with the technology, and to manages the twist hempen thread imitates that the research which appraised chiefly includes in effect which inspected and control evaluation and the construction course the evaluation of some one quotas, the unified evaluation system of not formation ; the twist hempen thread effect assessment method is managed to the now available project item, and stopping certain tier face in the item construction mostly, assessment method adaptability is wrong, and lacks the synthetical evaluation to the scattered assessment method of selection submitted a tender such as beckoning and so on
現有高速公路建設項目管理中的評價主要集中在經濟和技術方面，而對管理績效評價的研究主要包括監理的效果評價和施工過程中的一些單指標的評價，沒有形成統一的評價體系;現有的工程項目管理績效評價方法，諸如招投標的選擇之類的零散評價方法，大多停留在項目施工的某一層面，評價方法適應性差，缺少綜合評價。本文通過對現有高速公路建設項目管理評價體系存在問題的分析，結合高速公路建設項目管理的特點，構建了高速公路建設項目管理績效評價內容、指標體系，運用模糊評價法、專家評價法、熵評價法等對高速公路建設工程項目管理績效做出了綜合評價。Based on mono - pulse radar system and the analysis of terrain echoes, a geometrical model of air to ground ranging is constituted. by using the signals received from the sum and difference channels of terrain follow radar, a group of the expressions for terrain echoes are educed and characteristics of these echoes are obtained. according to the characteristics of the echoes, the theory and method of pass zero detection of difference channel and its applications are discussed in detail
針對一維單脈沖雷達體制，分析了地形目標回波特性；建立了地形跟隨雷達空地測距的幾何關系；利用雷達收發信號，導出了地形跟隨雷達和差接收通道的回波信號表達式，進行了波形模擬，得到了地形跟隨雷達的地面散射產生回波在時域中的特性；根據和差回波特性，闡述了差信號過零點檢測測距的原理和方法及工程實踐中的應用，並給出了真實雷達對外輻射試驗的結果，驗證了文中的模擬。The precious method to simulate earthquake accelerations is not perfect because the points on the interface still move according to the simulated acceleration when the points " motion ends, which is obviously a paradox. if the points " velocity is not zeroized, soil ' s damage value based on shear stress ' s peaks or extrema is overestimated in multi - point input analysis. the new method ' s rationality is analyzed
以往人工合成的地震波在地震結束時即地震加速度恆為零時速度不為零，這與合成地震動是「模擬輸入點從靜止到運動再到靜止的運動過程」這一要求不一致，同時導致時域內多點輸入分析時差動力過大以至算出的損傷值過大，於是本文提出了簡易的地震動速度歸零化方法並分析了其合理性。The manufacturability includes many aspects, such as geometry structure of parts, the rationality of the tolerance specification, fixturability and the assemblability etc. in the research, the main research topics are focused on the following aspects : the study on the incremental evaluation approach during the detailed design process, the study on the entireness evaluation after the design has completed and the study on the fixturability evaluation of the machined parts for modular fixture
本文的研究內容主要涉及以下幾個方面：詳細設計過程中的可製造性逐步評價方法、基於簡化加工工藝規劃的整體可製造性評價方法、面向組合夾具的零件可裝夾性評價方法等。在本研究中，零件的設計方案以b _ rep實體模型表示，零件的公差和表面質量以實體模型中各個相關面的屬性表示。The device can protect start - up status and running status of asynchronous motors by differential protection, over current protection, negative - sequence current protection, zero - sequence current protection, inverse time current protection, under - voltage protection and so on, can measure every kind of electricity, and can process the function of telecontrol, telemetering and telecommunication
其依靠電流差動、速斷、負序過流、反時限、零序過流和低電壓等保護方法實現了片電動機的運行、啟動和自啟動過程進行保護，並實現各種電量的計量，同時具有遙控、遙測、遙信的功能。To effectively control and manage engineering expense to contribute favorable or zero manufacturing variations
有效地控制和管理工程費用，爭取製造成本差異控制在零或節余In this paper, a new control strategy based on the adaptive deadbeat voltage space vector is presented. this control scheme has a lower sample frequency and a smaller difference between switch frequency and sample frequency. it has many advantages, such as producing zero vectors organically, tracing exactly, non - shaking, etc. and its dynamic response is better
對于電能質量調節器來講， pwm跟隨指令參考信號的控制性能在很大程度上影響著裝置的補償效果，本文選擇無差拍電壓空間矢量控制為系統控制策略，這種控制方法具有采樣頻率低，開關頻率與采樣頻率的差距小，能有機地產主零矢量、跟蹤精確以及無抖振等優點，動態響應快。Travel time is the key point of system, its measure quality decides the survey precision of the stress. time to digital convertor ( tdc ) was applied to accomplish the precision time interval measurement. at the same time, one transmitter - two receivers probe arrangement and zero - crossing detecting method were also applied to reduce the errors in measurement
傳播聲時是整個測量系統中的關鍵量，其測量水平決定應力的測量精度，對此本文採用時間-數字轉換器（ timetodigitalconvertor ， tdc ）完成高精度時間間隔測量，在實現過程中又分別採用「單端發射-雙端接收」的探頭布局模式和「過零檢測」手段來降低系統檢測誤差。For the purposes of the study, the authors focused on the aspect of vertical integration that varies the most among the sample firms : the extent to which the firms own their own retail distribution systems
出於本篇研究文章的需要，兩位作者集中考察了垂直整合在被調查公司中差異最大的方面，即公司在多大程度上擁有其所在的零售系統。The relationship between drawing top limitation and characteristics of scallop formation and thickness irregularity along article perimeter is found
確定了極限拉伸程度與齒槽形成特性和零件周邊壁厚差特性間的關系。Launching automatically, at the conclusion of the initial boot sequence or subsequent boot sequences, or upon connections to or disconnections from the internet, any non - microsoft middleware if a microsoft middleware product that provides similar functionality would otherwise be launched automatically at that time, provided that any such non - microsoft middleware displays on the desktop no user interface or a user interface of similar size and shape to the user interface displayed by the corresponding microsoft middleware product
在雙方的汽車零部件貿易中，美國則有128億美元的逆差。 1993年7月，日本雖然同意談判解決汽車市場的開放問題，但實際上卻拒絕與美國進入談判程序。因此美國採用這樣的措施，要求日本向世界汽車商開放市場，而且要求日本市場應該具有相應的透明度和競爭性。In addition, based sensor thermal drift and nonlinearity principle, this paper has designed intelligent sensor hardware circuit and edited a c51 program. the circuit with micro - process is simple and cheap, though the result has still a little error
本論文根據壓力傳感器零點補償與非線性補償原理，設計出了測量壓力傳感器的硬體電路及c51軟體編程，應用單片機技術測量電路簡單，成本低，應用面廣，但是由於自身的穩定性其測量結果仍存在誤差。In addition, based sensor thermal drift and nonlinearity principle, this paper has designed intelligent sensor hardware circuit and edited a software program. the circuit with micro - process is simple and cheap, though the result has still a little error
本論文根據壓力傳感器零點補償與非線性補償原理，設計出了測量壓力傳感器的硬體電路及軟體編程，應用單片機技術測量電路簡單，成本低，應用面廣，但是由於半導體本身的特點其測量結果仍存在一定的誤差。It has shown by the uncertainty of the data of fatigue experimentation and the size deviation of machine accessory and structure component and the original defect of materials that all of the stress and intensity and the factors that affect them are stochastic variables, so we should deal with the problem of fatigue by the method of probability and statistics to making the engineering life deduced by fatigue intensity to be the reliable life under a certain probability
疲勞試驗數據的離散性，零件和構件加工允許的尺寸偏差，材料中分佈的原始缺陷，以及受載零件危險部位應力響應的分佈特性等，都說明應力和強度以及影響它們的因素都是隨機變量，它們有各自的分佈形式，應該用概率統計理論和方法來處理，才能使疲勞強度在工程中所確定的壽命，成為保證某一概率下的可靠壽命。A more reasonable method to calculate soil ' s damage value is advanced, which bases on extrema of irregular dynamic shear stress. previously it bases on peaks of shear stress to calculate damage value, but by this method the destructive action of multi - point inputted earthquake is overestimated, especially in the second half section of responding shear stress " time history the shear stress caused mainly by differential force undulate slightly on one side of its zero line
以往計算土體在不規則的動剪應力作用下的損傷值根據的是動剪應力的峰值，在時域內多點輸入分析中，由於差動力的的存在，使得時程後段動剪應力不穿零而在一側做幅度不大的波動，基於峰值的損傷值計算特別過高地估計了這段剪應力的破壞作用，過高的程度還隨延時增加而增加。This criteria contains two parts. the first is to check the delay - independent stability of a class of multiple - delay linear difference systems
這個準則包括判定一類多時滯線性差分系統的時滯無關穩定性和判定某個多參數矩陣特徵方程無非零純虛根。" misalignment error ", which is caused by misalignment during null test adjustment, together with fabrication errors is shown in test results, and it is important to separate these two errors so that the test results can be used in ccos process. asic software is developed for eliminating nonlinear error and separating misalignment error, and a high accuracy, suitable format data file is generated by asic for further analysis for ccos process
在非球面測量技術方面，主要針對零位補償檢驗過程中測量坐標的「非線性誤差」的形成原因及其補償演算法由光學調整量引起的測量誤差以及調整量誤差的擬和方法等問題進行了討論，並編制了相應的干涉檢驗數據處理軟體asic ，干涉檢驗結果經分析、處理后能夠滿足ccos的技術要求並指導加工。A system of tolerance is necessary to allow the variations in accuracy that should occur during manufacture, and to provide interchangeable possible of the parts
必須有一種公差制來考慮製造過程中必然會產生不同的精度誤差，並且保證零部件的可互換性。It is widely used to measure optical element, optical system, detection of optical surface and the physical quantities ( such as field of temperature, field of density ) related with optical path difference. the underlying measurement principle of psi is to determine the phase of the intensity signal in interferogram received at each pixel of an imaging device
移相干涉術（ psi ）作為快速、非接觸的精密測量手段，已經廣泛地應用於光學零件、光學系統、精密表面檢測和其它一些與光程差參數相關的物理量的測量（如溫度場、密度場等） 。分享友人