propagation ratio
英
美
网络 传播比
双语例句
- It has been found that the crack propagation ratio obtained in the case of gradually increasing loading is smaller than that resulted from one-time loading.
在实验中还发现逐次从小载荷循环增至大载荷循环的裂纹扩展速率比一次加载明显减慢。 - The simulation using the bi-directional beam propagation method proves that the demultiplexer can have very low insertion loss and high isolation ratio.
藉由双向光束传播法来模拟此元件，结果显示此解多工器具有很低的插入损耗和高的隔离度。 - Based on propagation theory of plane wave, it is suggested that coherence in a crack could be indicated by the amplitude ratio or the coupling dynamic stiffness ( CDS).
依据平面波的传播理论提出由振幅比或裂隙耦合动刚度表示裂隙的粘合程度。 - The three criteria are used to analyse the crack propagation problem of the unidirectional fibre composite sheet with various fibre directions. The predicted results are compared with those of the existing normal stress ratio criterion and strain energy density criterion.
用这三个准则预测了具有各种不同纤维方向的单向纤维复合材料的裂纹扩展方向，预测结果与现有的比正应力准则和应变能密度准则进行了对比。 - The box wave technique can figure out the velocity and propagation direction of noise wave and the ratio of signal to noise, also test multifarious geophone arrays to gain the best economical and effective array.
盒子波技术可以较准确地获得干扰波的速度、传播方向以及资料的信噪比信息，能任意进行各种面积的检波器组合。 - But the layerage seedling of cross-filbert can not supply production demand since low layering propagation ratio.
但压条繁殖系数低，无法满足生产需求。 - The results indicate that there exist clear transitions in the regime of flame propagation with the variation of equivalence ratio of hydrogen air mixtures.
结果表明，火焰传播状态随着氢气当量比的变化而发生改变。 - The drawback of other simulation programs to simulate the light propagation in bio-tissue only has been overcome by adding some lens permeation ratio functions and optical transmission functions to the models established.
通过在所建立的模型基础上加入透镜透过率函数和光学传递函数，弥补了以往程序只能模拟光在生物组织中传播行为的缺点。 - A three-layer back propagation ( BP) network is proposed using the history data of loads and correlative factors as exemplar. An elimination based method and variance ratio test based method are used for selecting inputs for the proposed ANN.
构造了具有三层结构的BP网络，以历史负荷数据和相关影响因素数据为训练样本，采用排除法和方差比检验法对预测器的输入变量进行选择。 - Propagation effects of solar cosmic rays ( iii)& influence on the ratio of hydrogen to helium
太阳宇宙线的传播效应（Ⅲ）&对氢氦比的影响 - Numerical result shows that the propagation constants of even and odd modes are obviously affected by the radius ratio of the two fibers composing the coupler.
数值结果表明，组成耦合器的光纤半径比对偶模和奇模的传播常数都有明显的影响。 - A numerical analysis is presented in terms of finite element of hybrid-mode propagation characteristics in microstrip transmission lines, which include characteristics impedance, velocity ratio, dispersion characteristic and the effect of strip thickness. The results of calculation are compared with previous approximate calculations.
本文应用混合模有限元方法分析和计算了微带传输线的各种特性，包括特性阻抗、速度比、色散特性以及带厚的影响，并与有关文献结果作了比较。 - The propagation of behaviors has strong dependency on the ratio of the depth of the surface crack and the specimen.
表面裂纹的扩展特征强烈依赖于预制裂纹的切割深度和试样厚度的比值。 - Based on the attenuation and phase shifting as function of propagation range of underwater electromagnetic wave, the new ranging method with the phase ratio picked out from receiving signals is proposed.
基于电磁波在海水中传播时产生的传播衰减和传播相移随距离变化的对应关系，提出了将接收的电磁信号的幅度与相位分离处理后利用相位特征量进行比相测距的新方法。 - Both the numerical analysis and experimental data show that the fatigue crack propagation rate is insensitive to the stress ratio for plain stress thin specimens.
实验结果和模拟结果都表明，该试样厚度下，应力比对裂纹扩展速率几乎没有影响。 - Based on some theories of plane elastic wave propagation, the transmission model of weak intercalations for P wave fields is established and used to analyze propagation properties varying with incidence angles, depth, impedance ratio of the weak intercalations.
为此，基于固体弹性波传播理论，以平面P波为例，建立了弹性夹层对平面矢量波的透射模型。 - To analyze the characteristics of TBCs such as residual stress, bond strength, fracture toughness, and crack propagation ratio, the Young's modulus and Poisson's ratio are important parameters.
为确定热障涂层的残余应力、结合力、断裂韧性、疲劳裂纹扩展速率等性能和特性，需要知道其杨氏模量和泊松比。 - Independent component analysis ( ICA) and back propagation ( BP) neural network are used for pattern recognition of Electronic-nose. Considered the cross sensitivity of gas sensor array for improving the identify ratio to electronic-nose.
为了提高电子鼻对混合气体的识别率，针对气体传感器阵列的交叉敏感特性，探讨了在电子鼻系统中基于独立分量分析（ICA）算法与BP神经网络相结合进行模式识别的可行性。 - According to the multivariate calibration titration, a concept of the ratio of error propagation ( REP) is proposed, whose definition is the ratio of the standard deviation of the prediction of analyte and that of the measured signal.
提出了适用于多元校正滴定分析的误差传递率（REP）的概念，其定义为待测物预报的标准差与测量信号的标准差之比。 - Differences of sixteen cultivated Cymbidium hybridum orchids in bud propagation ratio were studied.
研究了16种基因型大花蕙兰芽增殖快繁繁殖系数的差异性。 - The transverse wave propagation in carbon nanotubes/ polymer composites laminated structures under ultrahigh frequency ( about 1THz) was studied based on the multiple-elastic-beam model. Effects of the volume ratio and chiral vectors of carbon nanotubes on transverse wave propagation were analyzed.
通过多层弹性梁模型研究了碳纳米管/聚合物复合材料层合结构在高频率（1THz左右）下的横波传播，分析了碳纳米管的体积分数和手性对其传播的影响。 - The gas concentration also has important influence upon the propagation velocity of flame, for the obstacle objects with the same characteristic size, the closer the gas concentration to the stoichimetrical ratio, the more obvious the accelerating action of the obstacle objects onto the flame.
瓦斯浓度对火焰传播速度也同样具有重要的影响，对于同一特征尺寸的障碍物，瓦斯浓度越接近化学计量比，障碍物对火焰的加速作用越显著。 - Matching through propagation makes use of the structural similarities of stereo triplet images in pyramidal graphs of BLI's, whereas the overall examination and verification of matching results is done by a comparison of the propagation success ratio.
传播匹配利用立体图像组在二值边界图像金字塔图中的结构相似性，而整个匹配结果的考察与认定是通过传播率的比较实现的。 - Such configurations possess excellent resistence to damage, delamination and crack propagation while exhibiting high stiffness to weight ratio.
这种结构不仅具有良好的抗破坏、分层及裂纹扩展的能力，更重要的是具有较高的刚度质量比。 - Data communications under such environments typically suffer from large propagation delay, high bit error rate, low signal/ carrier to noise ratio and frequent link disruptions. The network transmission performance is facing enormous challenges.
这类环境下的数据通信通常具有信号延迟大、信道误码率高、载噪比／信噪比低、通信链路频繁中断等特点，数据传输性能面临着巨大的考验。 - Finally, through the double spark plugs study found that the double spark plug can shorten the flame propagation distance, reduce deflagration tendency and can improve the burn rate effectively. So we can increase the compression ratio to improve the combustion efficiency.
最后通过双火花塞研究发现，双火花塞点火可以缩短火焰传播距离，减小爆燃倾向，有效的提高燃烧速率，因此可以通过适当增大压缩比的方式来提高效率。 - Cost-231 propagation model is used to calculate the path loss of the system and using the Friis formula signal to noise ratio is calculated.
本论文应用Cost-231传输模型计算系统的路径损耗，使用Friis公式来计算信号噪声比。 - By ANSYS/ LS-DYNA analyzed the process of the fatigue crack propagation and the factor influenced on crack growth rate, the influencing factor including average cyclic stress. Stress ratio, loading frequency and amplitude changeless.
用ANSYS/LS-DYNA模拟了疲劳裂纹扩展的过程，分析了影响裂纹扩展速率的因素，其影响因素有平均循环应力，应力比，加载频率和变幅等。