實測波高 的英文怎麼說
中文拼音 [shícèbōgāo]
實測波高
英文
observed wave height-
The experiment apparatus has been developed, which is based on software ( labview ) and hardware ( pci board ni 6024e ). the displacements and generative force at the tip of the ipmc actuators were measured with respect to the different voltages, frequents and various waveforms which include square, sinusoidal, and triangular wave
實驗選取了不同電壓幅值,不同頻率的方波、三角波、正弦波三種波形作為電激勵信號,利用高速攝像記錄ipmc的位移變形,並通過力傳感器實測了ipmc試樣末端的輸出力。By sheer coincidence, a trio of earth - monitoring satellites gave modelers the pristine, undistorted wave heights they needed for the indian ocean tsunami
十分巧合的是,有一組地球觀測衛星提供了最原始且如實的海嘯波高值,這是模型設計師模擬印度洋海嘯時不可或缺的。Observed tidal harmonic constants in many stations are used to verify the astronomical tides in the compound fluid model. the wave model is tested by a set of wave flume data at first. then the results are compared by the actual processes of significant wave height in gauging stations
其中復合流場模型中的天文潮利用眾多測站的實測調和常數進行驗證;波浪模型首先進行了水槽實驗的檢驗,然後在臺風過程中,進行了測站有效波高過程線的比較。Finally, using the low loss 3 - db three port network as power dividing and combing network and using hmmc 5040s fabricated by agilent co. as single - way amplifiers, with the help of e - plane waveguide to microstrip transition, we have designed a two - way power combing circuit with waveguide as interface ports. in 33ghz ~ 35ghz, the measured saturated output power is about 170mw, and the combing efficiency estimated is greater 70 %
最後,採用我們設計的3 - db三埠網路作為功率分配、合成網路,以常用的微帶e面探針作為微帶-波導過渡結構,採用agilent公司hmmc5040作為放大單元,製作出了波導介面的兩路合成電路,在頻率為33 35ghz實測飽和功率達170mw ,合成效率高於70 。They not only have the quality of slow decay, but also narrow beam and focused energy, which are widely used in military and communication
慢衰減電磁波的衰減比一般電磁波慢,可以實現較大的探測深度;由於它的頻率高,可以實現較高的解析度。Based on data collected from east china sea, the waves are calculated and analysed statistically, therefore as obtained the relation between wave height and significant period as well as average period
摘要根據實測數據對我國主要漁區(東、黃海)的波浪進行了統計分析,得出適用於該海區的有效波高與有效周期及有效波高與平均周期的統計關系式。Theory and application of wavelet transform method for measuring dynamic characteristics of high - rise buildings
用小波變換方法測試高層建築物動力特性的原理與實際應用The real runoff time series was divided into the high frequency item and the low frequency item with the help of the wavelet analysis first, then the two items were modeled by chaos theory and the stepwise regression algorithm, at last the output of the two models were added together.
論文首先藉助小波分析,將實測徑流時間序列分解為高頻項和低頻項兩項,其次對這兩項分別用混沌理論和逐步回歸理論建模,其中混沌預報藉助基於自組織法求解的的volterra級數來完成,然後將兩者結果疊加起來。In accord with the state standard about harmonic. the harmonic permission value of tangqian line is calculated. some measurement data are shown and analyzed, and some main conclusion is drawed that the 7th harmonic voltages of tangqian line is near to the permission value, total harmonic voltage distortion ratio has oversteped the permission value. the 3th harmonic, the 5th harmonic, the 7th harmonic and the 9th harmonic current from tangqian line all overstep the permission, the largest 5th harmonic current ratio in tangsc reaches 44 %, the 7th harmonic and the 9th harmonic current in tang7c and tangsc is large maybe because the harmonic current is magnified. this paper studies the model of each element in tang yin substation
根據有關公用電網諧波的國家標準,計算出湯牽線注入湯陰變電站的諧波電流允許值,從實測數據可以得出一些重要結論:湯牽線7次諧波電壓含有率的最大值接近國標中的限值,湯牽線的諧波電壓總畸變率的最大值已超標;湯牽線注入電網的3 、 5 、 7 、 9次諧波電流都超標;湯6c電容器的5次諧波電流含有率較高,最高達到44 ;湯7c和湯8c電容摘要器的7次和9次諧波電流含有率偏高,原因可能是發生了諧波電流放大現象。The principle and structure of pll ( phase - locked loop ), including fll and loop filter, are analyzed and described. the module of carrier synchronization in the all - digit ds - qpsk receiver was carried out in the fpga chip. the problem about the estimation and track of the correlative carrier frequency under high dynamic circumstances was resolved very well
針對某遙測遙控全數字接收機的研製,對相干載波同步中的鎖相環、鎖頻環、 dpll 、本地nco等進行了詳細的分析和優化設計,在fpga上實現了高動態全數字ds - qpsk接收機中的載波同步模塊,解決了大范圍和動態多普勒頻移下接收機的相干載波提取與跟蹤問題。It can be used in any complex environment, can locate all paths from transmitter to receiver which avoid redundant calculation, and it is a standard 3 - d forecast model ; in addition, it is a point to point ray tracing method based on specular theory which do n ' t carry out the receive test ; furthermore the model adopt the reverse arithmetic which exert the tree concept in data frame and establish a virtual fountain tree permanently, the proagmme can back - search the virtual fountain tree when it is running. these operation increase the calculate speed and it result in the higher receive efficiency and precision. the thesis design a programme to compare the prediction results based on ray tracing method of virtual fountain tree between the measurement results and prediction results based on the other transmittion models. the comparsion result indicate the new model is a better model
它可應用於任何復雜的傳播環境中,能找到發射機到接收機之間的所有電波傳播路徑而無須冗餘的計算,是一種準三維的預測模型;另外,從本質上講,它仍然是一種基於鏡像理論的點對點的射線跟蹤法,所以它無須進行接收測試;而且由於採用了反向演算法,運用數據結構中多叉樹的概念,先確定需要計算的場點位置,找出所有能從源點到達場點的射線,並且可一次性建立一個虛擬源樹,以後每次的計算只要通過對該樹進行後序遍歷即可,大大提高了運算速度,因而有較高的接收效率與精度。本文對該模型進行了相應的模擬,並將其預測結果與實測結果以及基於cost231經驗性模型和基於強力射線跟蹤確定性模型的預測結果進行了比較,結果表明了該模型的優越性。In order to improve the prospecting precision to the earth of transient electromagnetic method ( tem ), the idea of tem imaging is proposed according to the characteristics of both electromagnetic wave propagation and response : the wave - impedance is calculated from observed data in - field by the way of inverse - faltung and linear digital filter ; the sequence of reflection coefficients corresponding to every tiny - lever move time is calculated by the way of linear programming, and the imaging result section is drawn consequently
摘要?提高瞬變電磁法的對地探測精度,從瞬變電磁場的傳播特性和電磁響應特性兩個角度?慮,提出了瞬變電磁成像方法:由野外實測磁場感應數據,經過反褶積和線性數字濾波求出波阻抗;用線性規劃法求出每一微層走時所對應的反射系數序列,並以此?參數繪製成像結果圖。The cpld can offer its particular functions. for example, reducing the number of components and devices, making the layout board convenience and simple, decreasing the device ' s volume. it is propitious to make portable oscilloscope
選用一般的a / d轉換器和up控制器即能實現對高頻率的重復信號進行測量,大大降低了成本和外圍電路復雜程度和設備體積,有利於製作便攜式示波器。The dynamic characteristics identification model of high - speed flexible rotor sys tem has been set up, the technology of steady state sine excitation and digital elliptic filter is used in order to identify the system parameter, and by constrasting the real measure to the theoretical computation, it proved that the method is accurater
建立了高速柔性轉子系統特性參數識別模型,並採用穩態正弦激勵及數字橢圓濾波器技術對系統參數進行識別,通過對實測和理論計算結果的比較,證明該方法有較高的精確性。China is one of the countries which are harmed by storm surge both tropical and temperate cyclones, the disaster of storm surge can occure every seasons and from south to north in china ' s coastal area. based on the analysis of the features of temporal and spatial changes of storm surge disaster in the recent 50 years, this paper focuses on the frequency changes of historical records in recent 500 years and measured data in recent 50 years of storm surge disaster and the relationships between storm frequency change and climate fluctuation. meanwhlie, the effects of future increase in the frequency of tropical cyclones landing or affecting china and relative sea level rise with global warming on storm surge disaster of china ' s coastal area also discussed. the results show that, in recent 500 years, there are direct relationships between storm frequency change and climate fluctuation, i. e., high global mean temperature correspond with high storm frequency and low mean temperature correspond with low storm frequency. storm surge disaster in china ' s coastal area will be exacerbated with global warming
中國是全球少數幾個同時受臺風風暴潮和溫帶風暴潮危害的國家之一,風暴潮災一年四季,從南到北均可發生.本文基於中國沿海近50年風暴潮災時間變化和空間分佈特點的分析,著重探討了近500年全國及長江、黃河、珠江三角洲的歷史記錄和近50年實測風暴潮災發生頻次的變化及其與氣候波動的關系,並對未來全球變化背景下,中國沿海風暴潮災的變化趨向進行了討論.結果表明:近500年來,中國沿海的風暴潮災在氣溫較高的偏暖時段比氣溫較低的偏冷時段明顯增多.近50年實測臺風暴潮災的變化也是如此,而溫帶風暴湖的變化則與此相反.未來全球變化引起的登陸影響中國的熱帶氣旋頻次增加和相對海平面的上升,均將導致風暴潮災呈加重的趨向Because the harmonics in tangyin substation are primarily from electric traction loads, this paper gives the structures of several main locomotive models and general harmonics they produce. the harmonics produced by electric locomotive have a characteristic that their range and phase are both dispersive. this paper also analyzes the impedance - matching balance transformer ' s structure and harmonics injected into the power system at its primary side, and sums up the characteristics of the harmonics from electric traction loads in the tangyin traction substation
鑒于湯陰變電站的諧波主要來自電力牽引負荷,本文列舉了電力機車幾種主要車型的結構以及它們產生諧波的概況,得出了電力機車的各次諧波電流幅值和相角具有較大分散性的特點。針對湯陰牽引變電站的牽引變壓器,分析了阻抗匹配平衡變壓器的結構及其高壓側注入電網的諧波,推導了有關計算公式。通過理論分析並結合湯牽線的實測諧波數據,歸納了電力牽引負荷注入湯陰變電站的諧波的特點。The sources of error in the experiment of measuring wavelength and grating constant with diffraction grating are analysed. the improving method and theory base are also provided
摘要分析了用透射光柵測波長和光柵常量的實驗中,某些因素對測量結果精確度的影響,並提出了提高測量精確度的方法和依據。The result shows that the ability of anti - interference from strong - narrow band can be improved by using albefaction filter, the interference resisting property of the dual tap filter is much better than that of predicted error filter
模擬結果表明,加白化濾波器確實能提高系統的抗強窄帶干擾的能力,同時也表明雙向抽頭濾波器的抗干擾性能比預測誤差橫向濾波器的性能要好。The key points of this paper can be concluding as follows : 1. the regulations of vibration attenuation of a subway are concluded by analyzing the situ data. in the zone near rail, the high - frequency vibration is stronger than other weight, and in the zone far away from railway, the results is opposite
主要研究內容和結果如下: 1 .對某地鐵線路環境振動實測數據進行了分析,得到了振動波在土中的傳播規律:地鐵運營誘發振動傳播過程中,近軌區域以高頻振動為主,遠軌區域以低頻振動為主。The influence of stress wave propagation on high acceleration measurement of projectile
應力波傳播對彈丸實測超高值加速度的影響分享友人