beam detector 中文意思是什麼
beam detector
解釋
束流控測器-
Study for backward scattering photoelectrical and smoke detector based on collimated beam
基於平行光束的後向散射光電感煙探測器的研究 -
This paper analyses emphatically the position error and manufacture error of critical - angle prism the position error and aberration of object lens the position error and manufacture error of the polarization beam splitter the position error of the detector, and come out their relations
著重分析了臨界角棱鏡位置誤差與製造誤差；物鏡的位置誤差與像差；偏振分束棱鏡的位置誤差與製造誤差；探測器的位置誤差等對離焦誤差信號的影響，並給出了理論曲線。 -
In this method of measuring time - resolved spectrum, a special light beam modulator translates the time - distribution of an optical spectrum into a space - distribution of light intensity of the light beam, and the space - distribution spectrum is dispersed by a multi - spectrometer, then it is detected by an ordinary 2 - d ccd array detector
瞬態時間分辨譜測量方法的主要思想：使用特殊光束調制器把光譜隨時間的變化過程轉化為光強的空間分佈，經色散后，以二維探測器接收並轉換光信號為電信號，用通用計算機控制採集並處理光譜數據。 -
Elastic recoil detection technique with high depth resolution has been developed at the hi - 13 tandem accelerator of ciae. with high quality beam which was used for bombarding target, the recoils were detected with q3d magnetic spectrometer following a focal plane detector and a ae - e telescope detector with longitudinal double - room ionization chamber
該系統用高質量的重離子束轟擊薄膜或塊材靶樣品，利用q3d磁譜儀及其焦面探測器和縱向型雙電離室e ? e望遠鏡探測器兩套探測系統，在前角區測量了靶中各種元素的反沖能譜。 -
Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section
在第三章介紹無線光接入系統的光收發單元，採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用，針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通信的技術，同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標，最後給出了一個整個傳送鏈路的功率預算。 -
In the terms of interpolation, the image reconstructed from nearest interpolation or linear interpolation has good edge but serious noise ; reconstruction from 4 * 4cubic interpolation or three b - spline or three - order lagrange interpolations has better local character. 2 x 2cubic interpolations which has both better edge and local character is the ideal interpolation, the following is the basic principle during reconstruction : ( 1 ) the more width of interpolation, the more number of summation and the more order of interpolation polynomial, the higher of density resolution ; ( 2 ) the more of interpolation polynomial and width of interpolation, the more of reconstruction time simultaneously, aimed at eliminating the effects of noise contained in projection data, in this paper, author analysis cause and effects of common artifacts. importantly, discusses convolution back - projection reconstruction algorithm with a shift axis of rotation has been derived for correcting images that acquired with a divergence axis of rotation using the fan beam geometry with an angle - equaled detector
在ct圖像重建時，選擇有限帶寬窗有較好的空間解析度，三角形窗有較好的密度解析度，選擇餘弦窗則使得空間解析度與密度解析度的折衷；從窗函數的頻譜角度來講，可以用於圖像重建的一個良好的卷積窗函數應該具備以下條件： （ ? ）小的3db帶寬b ，即最小的主瓣寬度； （ ? ）最小的旁瓣最大峰值a ； （ ? ）最大的旁瓣峰值衰減速度d ；就內插函數而言，臨近點內插與線性內插重建圖像噪聲大，但有較好的邊緣與細節； 4 4三次內插、三次b -樣條與四次拉格朗日多項式內插圖像平滑，局部特性較好。 -
This paper regards narrow fan - beam scan mode as multi - detector parallel beam scan mode
本論文將窄角扇束掃描看成是多探頭的平行束掃描。 -
Energy resolutions of 3. 3 % for the ae detector and 1. 5 % for er detector are obtained by the in - beam test with the elastic scattered 12c from 197au at the energy of 50. 3 mev
它可單獨作erd分析，也可配合q3d磁譜儀進行erd分析，獲得高精度的元素深度分佈譜，也可用於其它核物理實驗中。 -
Just under 3 feet in diameter and weighing 45 pounds, the black circular device emits an intense 15 - to 30 - degree - wide acoustic beam - - a high - pitched shrill tone similar to a smoke detector alarm - - that can easily cause permanent auditory damage at close range
僅僅在3尺之下在直徑中的秤重45磅，黑色的圓形裝置發出強烈的15 -達到30程度-寬的聽覺光線- -一尖銳的尖銳聲音明暗相似的對煙發現者警報- -那能容易地因素燙發聽眾席損害在結束范圍。 -
The experiment populated the excitation state of 64cu via 64ni ( p, ny ) 64cu * reaction and the lifetime of low - lying excitation state of 64cu were determined via the delayed coincidence method between pulse proton beam and de - excitation y rays detected by ge ( li ) detector
Sns ）與ge （ l ）探測器測量退激y射線延遲符合的方法，由時間譜tof峰的中值移動的方法來確定激發態壽命。 -
The beam from kek carries higher - energy neutrinos, which can be spotted easily even with the surviving tubes spread more sparsely across the detector
Kek產生的射束帶有較高能的微中子，所以即使是只用倖存但散布較疏的光電管，也仍可輕易將之偵測出來。 -
In this paper, two novel algorithms of reconstructing high resolution images from both overlapped parallel projection data and overlapped fan beam projection data with low resolution are presented. one is called virtual detector algorithm, and the other is direct reconstruction algorithm. both of the algorithms with two forms for the parallel data and fan beam data respectively are developed based on the interpolative algebraic reconstruction techniques ( iart )
本文在研究插值代數重建法（ iart ）的基礎上，根據特別設計的數據採集模式（平行相疊采樣和扇形相疊采樣） ，提出了由相疊低分辨數據重建高分辨圖像的兩個新演算法，即虛擬探測器法和直接重建法。 -
Obfd optical beam flame detector
線型光速火焰探測器 -
The simulation results show that, either for parallel geometry or for fan beam geometry, high resolution images can be reconstructed by means of both the algorithms from the overlapped projection data. moreover, the quality of the images reconstructed by the virtual detector algorithm from the overlapped low - resolution projection data is almost as good as that of the images reconstructed directly from the high - resolution projection data
大量模擬試驗結果表明，無論對平行束的相疊低分辨數據還是對扇形束的相疊低分辨數據，用虛擬探測器法和直接重建法均可由相疊低分辨數據重建出具有較高解析度的圖像。 -
The fundamental principle of this system is as follows. divide the incident beam into two beams, one of which passing through variable optical delay ( vod ), then combination of the two beams with the same amplitude and delay - superposition is sent to bi - photon detector and transformed into current signals, whose intensity is proportional to the intensity of bi - photon autocorrelation signals
本系統的主要原理是:把入射光分為兩束，讓其中一束光通過一個可調光纖延遲線，再把這兩束具有相同幅度並延時重合的光合路後送進雙光子探測器，該探測器同時吸收兩個光子發生雙光子效應從而產生電流信號，且其大小與雙光子自相關信號的強度成正比。 -
Method of improving line - type infra - red beam smoke fire detector ability in resisting environment beam
線型光束感煙火災探測器克服光干擾的方法 -
The attention of the conference is paid to the trends and developments in micro - beam techniques, total reflection x - ray fluorescence analysis, new x - ray detector developments, film and coat analysis, sample preparation techniques and semi - conductor material analysis, etc
會議期間，關于微束裝置及其分析技術、全反射技術與應用、探測器研製、薄層分析、樣品制備、半導體材料分析等，受到廣泛關注。
分享友人