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- pair production attenuation coefficient 電子對生成衰減系數
- Attenuation Coefficient The rate at which average power decreases with distance. 衰減系數平均功率隨距離的延長(cháng)而降低的比率。
- Objective: Study the influence of parameters such as attenuation coefficient, velocity of sound, and temperature of medium on focusing sound field. 目的:研究聲衰減系數、聲速、溫度等媒質(zhì)參數對聲聚焦的影響。
- The attenuation coefficient shows approximately linear behaviour with frequency over the frequency range used,and the attenuation slope increases with the void content. 結果表明:超聲衰減系數與頻率之間存在線(xiàn)性關(guān)系,而且其斜率隨孔隙率的增大而增大。
- Expound the component, the principle and the working process ofthe material attenuation measure device, give the attenuation coefficient calculation method. 闡述了材料衰減測試系統的組成、原理及工作過(guò)程，給出了衰減系數的計算方法。
- Abstract: Expound the component, the principle and the working process ofthe material attenuation measure device, give the attenuation coefficient calculation method. 文摘:闡述了材料衰減測試系統的組成、原理及工作過(guò)程，給出了衰減系數的計算方法。
- Abstract: The relation between the line attenuation coefficient and the material thickness of FTO has been studied, and the function between them has been given. 摘 要： 用數值模擬的方法研究了FTO客體材料的線(xiàn)吸收系數隨著(zhù)穿透材料深度的變化關(guān)系，并擬合出材料有效線(xiàn)吸收系數與厚度之間的函數表達式。
- Point and spot lighting usually have attenuation coefficients. 點(diǎn)光源、聚光燈通常具有衰減系數。
- The attenuation coefficient of the dominant mode is less than 1 dB/m when the dielectric material is polyimide and the depth is 0.05 mm,which is far less than that of the same bore diameter metal circle waveguide for THz radiation. 得出其主模在THz頻段的衰減常數小于1 dB/m,該值遠小于相同內徑的金屬圓波導在這一頻段的衰減常數。
- This paper introduces an algorithm for retrieval of euphotic depth and digs out the relationship between the euphotic depth and the diffuse attenuation coefficient Kd(490) of the South China Sea based on in situ measurement data:zeu=2.784/Kd(490). 介紹了真光層深度的遙感反演算法;并根據實(shí)測資料;通過(guò)經(jīng)驗擬合得到南海海水真光層深度與海水漫衰減系數Kd(490)的關(guān)系:zeu=2.;784/Kd(490)。
- Acoustic characteristic parameters of living beings organization are as follows, mainly Sound of spread speed, sound of reactance, attenuation coefficient, sound of scattering and some non-linear parameters. 生物組織聲學(xué)特征參量主要有：聲傳播速度、聲阻抗、聲衰減系數、聲散射及一些非線(xiàn)性參數。 由于有些組織的病理變化不能僅僅從某一聲學(xué)參數的大致變化來(lái)區分，組織聲學(xué)參數的定量研究受到眾多科研工作者的重視，特別是組織聲速、聲衰減系數的測量，通過(guò)測量聲衰減系數可以區分B型成像儀上診斷不出來(lái)的病灶。
- Conclusion The way in diagnosis of fatty liver by uses of echo intensity histograms to calculate the attenuation coefficient is of clinical value and a kind of objective and simple method. 結論運用超聲直方圖計算衰減系數來(lái)診斷脂肪肝是一種客觀(guān)、簡(jiǎn)便的方法。
- Methods The study make use of echo intensity histograms to calculate the attenuation coefficient,samples were taken from different depth of the liver and 53 patients were enrolled. 方法運用超聲直方圖測量53名患者同一切面不同深度的肝組織回聲的灰階值,并計算出衰減系數,按超聲常規檢查是否有脂肪肝和血甘油三酯是否正常分組,對各組的衰減系數進(jìn)行對照分析。
- Many empirical regression relationships between the concentration of DOC and the diffuse attenuation coefficient, the euphotic depth (1% of surface irradiance) were found in many studies. 光衰減系數與溶解性有機碳(DOC)、有色可溶性有機物(CDOM)一般呈顯著(zhù)性正相關(guān)；
- The propagation of Gauss laser beam in different kinds of water is measured, and based on the measured data, the effect of optical attenuation coefficient on beam propagation is analyzed. 摘要對高斯光束在不同水體中的傳輸特性進(jìn)行了初步實(shí)驗研究，分析了水體衰減系數對傳輸特性的影響。
- I bought a pair of tan leather shoes the other day. 前幾天我買(mǎi)了雙棕褐色的皮鞋。
- Price's index showed that the attenuating coefficient of the citation was in line with the law of attenuation in natural science references. 引文衰減系數符合自然科學(xué)領(lǐng)域文獻老化規律。
- iterative attenuation coefficient 累接衰減系數
- narrow beam linear attenuation coefficient 窄(X線(xiàn))束線(xiàn)性衰減系數
- Don't mix up this pair of synonyms. 別把這兩個(gè)近義詞混淆了。
