density detector 中文意思是什麼
density detector
解釋
密度檢測器-
The intensity of light back scattered from bubbles is related to the type of detector, the distance and the density of bubbles
水中氣泡後向光散射強度與探測器類型、氣泡距離以及氣泡密度等因素有密切關系。 -
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。 -
Below when has one of situations, on the smoke detector reports to the police the indicating lamp to be red glistens, the main engine regardless of is at what kind of condition to be able the scene alarm signal to report to the police, simultaneously automatically dials to suppose the telephone to report to the police in advance : 1 guards against spatial the smog density and the duration to achieve reports to the police the value ; 2 holds back on the smoke detector the test button
當有以下情形之一，煙感探頭上的報警指示燈紅色閃亮，主機無論處於何種狀態都會現場警號報警，同時自動撥打預設電話報警： 1防範空間的煙霧濃度和持續時間達到報警值2按壓煙感探頭上的測試按鈕。 -
Hanging ozone generators and their mcu control system. 6. ozone density detector
四高性價比的臭氧濃度監測器。 -
Ozone density detector 7. controller of temperature, humidity and light for agricultural shed
三，壁掛式臭氧消毒保鮮機：智能集中控制，用於庫房，冷庫，蔬菜庫的保鮮和消毒。 -
Cd1 - xznxte single crystal with good crystallinity has been grown by the descending ampoule with rotation method - before this, high - purity cd1 - xznxte polycrystal materials have been synthesized from 6n gd zn te in the same ampoule. on the basis of this, we deeply explore method of detector fabrication. and we also studied the level and density of traps in detector. gold, indium and c have been deposited as electrodes on polished and chemically etched surfaces of samples with the sizes from 5 5 1 to 10 10 1. 5mm to compare different contact technologies. the behavior of detector ' s leakage current with temperature and leakage current with time were studied as well as th current - voltage characteristics to deduce the level and density of trap in detectors
我們利用熔體溫度振蕩法在石英安瓿中將6n的單質cd 、 zn 、 te合成多晶原料，用坩鍋旋轉下降法在同一安瓿中生長出尺寸為20 40mm的cd _ （ 1 - x ） zn _ xte晶體。在此基礎上對碲鋅鎘探測器的工藝進行了較深入的研究，製作了厚1 ? 1 . 5mm的探測器，測試了c 、 in 、 au等不同金屬的電極接觸性能，並在國內首次通過測試器件的i ? v 、 i ? t曲線、弛豫特性和電容特性對電阻率、陷阱能級、陷阱濃度進行了分析，同時測得的~ （ 241 ） am源的能譜。 -
Tgs method utilizes a high - purity germanium ( hpge ) detector with large volume to perform low - resolution tomographic transmission scans on each layer and yield absolute images of the matrix ' density
測出的線衰減系數是絕對值，成像只要求低分辨。然而， tgs有ct測量所沒有的發射測量和圖像重建的問題。
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