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- Based on the pseudo-plane-wave theory, transmission losses (TL) of exhaust pipes are calculated for the first time for different temperatures, flow velocities and pipe dimensions. 基于準平面波理論,首次計算了考慮熱粘性效應時(shí)不同溫度、流速和管道尺寸下排氣管道中的傳遞損失,分析了各參數對管道中噪聲衰減的影響。
- After being analyzed with FEM, impedance tube method was introduced to measure sound transmission loss(STL) of glass. 在有限元分析基礎上,采用了駐波管法對小樣品玻璃進(jìn)行隔聲量測量。
- Through testing on muffler on a certain motor, the paper evaluates the static performance of sound transmission loss of the muffler. 通過(guò)對某種發(fā)動(dòng)機使用的消聲器進(jìn)行測試,對消聲器的靜態(tài)傳聲損失性能作出評價(jià)。
- Excellent copper, Ni-plated, used to connect two coaxial cables to prolong signal transmission. Low transmission loss and excellent shield property. 優(yōu)質(zhì)銅材,外表鍍鎳,用于將兩條同軸電纜連接起來(lái)延長(cháng)信號傳輸。傳輸損耗低。屏蔽性能好。
- Through testing on muffler on a certain motor,the paper evaluates the static performance of sound transmission loss of the muffler. 通過(guò)對某種發(fā)動(dòng)機使用的消聲器進(jìn)行測試,對消聲器的靜態(tài)傳聲損失性能作出評價(jià)。
- Mulholland, K.A., Parbrook, H.D. and Cummings, A., The transmission loss of double panels., J.Sound Vib., 6 324-334 (1967). 楊瑞峰;具平面界面之流體飽和多孔材料波傳特性分析;碩士論文(2001).
- The Jacobian matrix is formulated by incremental transmission loss in terms of the sensitivity factors, the DSR constraints, and the SVSR constraints. 優(yōu)化模型的雅克比矩陣由網(wǎng)損和各節點(diǎn)發(fā)電量之間的靈敏度因子以及動(dòng)態(tài)安全域和靜態(tài)電壓安全域的系數構成。
- The result shows the minimum of transmission loss corresponding different core/cladding shear viscosity with different core material. 結果發(fā)現經(jīng)各芯層材料所制備之塑膠光纖大致均會(huì )在最適化芯皮層剪切黏度比值下出現光纖傳輸損耗之極小值。
- The present study employs the numerical simulation software SYSNOISE to investigate the noise attenuation(transmission loss)of water silencers. 采用SYSNOISE軟件,用數值模擬的方法對多種結構形式的水消聲器聲學(xué)性能(傳遞損失)分別進(jìn)行了研究。
- Furthermore, we investigated the relationship of transmission loss and core/cladding shear viscosity under the optimization of processing. 進(jìn)而探討不同芯層材料所制備之塑膠光纖在最適化加工條件下,光纖傳輸損耗值與芯皮層剪切黏度比的關(guān)系。
- Qifeng Ding and Ali Abur, “Transmission Loss Allocation in a Multiple-Transaction Framework,” IEEE Transactions on Power Systems, Vol. 19, No. 1, pp. 214-220, February 2004. 謝世杰、王心民,“對局理論應用于電力系統等效注入電流模型之線(xiàn)損分攤研究”,中華民國第二十三屆電力工程研討會(huì )論文集,1516頁(yè)至1521頁(yè),民國91年12月。
- The predicted transmission loss of perforated tube silencers using the finite element method and experimental results are compared and showed good agreement. 使用有限元法計算穿孔管消聲器的傳遞損失,并與實(shí)驗測量結果進(jìn)行了比較,二者吻合良好。
- When the conductance of sound radiation for IDT is equal to the output conductance for the matching network, the reflection loss and transmission loss can be reduced. 叉指換能器的聲輻射電導等于匹配網(wǎng)絡(luò )輸出端電導時(shí),可以減小反射損耗和傳輸損耗。
- The results show the model-based sound field match well to the data and the transmission loss is decreasing with depth because of the downward refracting sound speed profile. 比較在內潮及非線(xiàn)性?xún)炔ㄗ饔孟碌穆晥?chǎng),可發(fā)現內潮作用下的傳播損耗大于非線(xiàn)性?xún)炔ㄗ饔孟碌膫鞑p耗。
- Influencing factors on the transmission loss of light signs and the loss limit of plastic optical fiber are discussed, particularly for graded index plastic optical f ibers. 討論了影響信號傳輸的因素和有機光纖光傳輸損耗的極限, 并對當前受到廣泛重視的漸變型有機光纖的研究進(jìn)展給予了特別的關(guān)注。
- Results showed that it was realizable by taking such measures as using high inner-clad numerical aperture, appropriate rare-earth doped double-clad fiber and decreasing transmission loss of sunlight. 計算結果表明,通過(guò)采用內包層數值孔徑較大、摻雜適當稀土元素的雙包層光纖及減小太陽(yáng)光傳輸過(guò)程中的損耗等措施提高光纖激光器對太陽(yáng)能的吸收效率,可以實(shí)現太陽(yáng)能直接抽運光纖激光器。
- I commiserate with you on the loss of your mother. 你母親逝世,我特向你慰問(wèn)。
- In each pass band,the transmission loss is less than 0.1 dB and the reflection loss is more than 15 dB,the isolation is more than 30 dB.As a result,the energy efficiency is as high as 95%. 該多工器每路的傳輸損耗在0.;1 dB以下;反射損耗在15 dB以上;各路之間的隔離度在30 dB以上;能量效率在95%25以上。
- How can we divert her thoughts from her sad loss? 我們怎樣才能使他不再想到她可悲的損失?
- Transmission losses will be less than 7 percent, significantly less than the losses from conventional 500-kilovolt (kV) high-voltage direct current (HVDC) transmission schemes. 電力的傳輸損失將少于7%25,遠遠低于傳統500千伏高壓直流(HVDC)傳輸計劃的損失量。