查询词典 propagation loss

As the foundation of ultrasonic testing of composite materials, this thesis is intended to explore in detail a number of features of wave propagation in anisotropic plates, and the following essential problems will be considered:(1) Propagation of plane bulk waves in homogeneous and orthotropic anisotropic media;(2) Lamb wave propagation in multilayered anisotropic plates;(3) Influence of isotropic solid or liquid loading on Lamb wave propagation in anisotropic solid media;(4) Influence of interface layers on Lamb wave propagation in layered anisotropic composite laminates;(5) Dispersion characteristic analysis of attenuation Lamb wave while existing an thin viscous layer which is used for simulating the poor curing in adhesively bonded joints.

作为复合材料超声检测的基础，本文研究了如下国际前沿性的课题：（1）平面体波在正交均匀各向异性媒质中的传播；（2）多层各向异性媒质中Lamb波的传播；（3）各向同性固体或液体负载对各向异性固体媒质中Lamb波传播的影响；（4）界面层对层状各向异性复合媒质中Lamb波传播的影响；（5）胶粘剂未固化而呈现粘弹性时粘接结构中衰减Lamb波的频散特性分析。

At a certain range, habitat loss and its spatial structure can benefit the control of the epidemic disease, which indicates the possibility of using human disturbance in habitat as a potential epidemic-control method in conservation.(6) Not only the quantity of habitat loss but also the spatial correlations of patch types caused by nonrandom habitat loss affect the invasion and transmission of disease. More fragmented landscape (high amount of habitat loss, low clustering of lost patches) hinders the parasitic infection, which also indicates that whether the spatial heterogeneity benefits or hinders the invasion is dependent on the considered ecological process.(7) Two components of the spatial heterogeneity (the amount and spatial autocorrelation of the lost habitat) form a trade-off in determining the host-parasite dynamics.(8) Within a certain range of habitat loss, host can counterbalance the positive and negative effects, and shows a rising tendency.(9) The epidemic is more likely to break out in the prey-predator system if only a small amount of habitat loss.(10) A highly aggregated distribution of species is a common behavioral strategy when dealing with habitat loss or other environmental stresses.(11) The parasite-host/prey-predator eco-epidemiological systems have the similar mechanism with the intraguild predation systems, and the predator acts as the intraguild predation, the infected prey acts as intraguild prey, and the susceptible prey acts as shared resource.(12) Species at the highest trophic level are no longer affected the most by habitat loss, which depend not only on the biological mechanism but also on the external environmental disturbances.

随着邻体数目的增加，病毒的感染力度变得更大而且在空间上形成聚集的波形；(5)生境破坏及其空间结构在一定范围内有利于疾病的控制，这暗示人为对生境的干扰可作为疾病控制的一个潜在方法；(6)生境破坏的数量以及不同类型生境的空间分布格局都显著地影响了寄生病毒的入侵和传播，生境破碎化程度越高(高丧失斑块的数量或低聚集程度)，将越有害于病毒的入侵和传播，这暗示了空间异质性是否有益于物种的入侵依赖于所考虑的生态过程；(7)由生境破坏引起的空间异质性的两个组分之间存在负偶联关系trade-off(8在适度的生境破坏范围内，宿主种群能够平衡生境破坏带来的正负两种效应并呈现增长趋势；(9)在捕食-食饵系统中，寄生感染病毒极有可能在生境破坏量较低时爆发；(10)物种在面临生境破坏或者其它环境压力时表现出更高的聚集分布策略；(11)寄生-宿主/食饵-捕食生态传染病系统与共位捕食食物网结构具有相似的生物机制，其中捕食者扮演共位捕食者的角色，已感染食饵作为共位食饵，易感染食饵扮作共同消耗的资源；(12)位于最高营养级水平的种群对生境破坏的响应不一定是最敏感的，这不仅依赖于内在的生物机制同时也依赖于外在的环境干扰。

EXCLUSIONS 4 In no case shall this insurance cover 4.1 loss damage or expense attributable to wilful misconduct of the Assured 4.2 ordinary leakage, ordinary loss in weight or volume, or ordinary wear and tear of the subject-matter insured 4.3 loss damage or expense caused by insufficiency or unsuitability of packing or preparation of the subject-matter insured (for the purpose of this clause 4.3 "packing" shall be deemed to include stowage in a container or liftvan but only when such stowage is carried out prior to attachment of this insurance or by the Assured or their servants) 4.4 loss damage or expense caused by inherent vice or nature of the subject-matter insured 4.5 loss damage or expense proximately caused by delay, even though the delay be caused by a risk insured against (except expenses payable under Clause 2 above) 4.6 loss damage or expense arising from insolvency or financial default of the owners managers charterers or operators of the vessel 4.7 deliberate damage to or deliberate destruction of the subject-matter insured or any part thereof by the wrongful act of any person or persons 4.8 loss damage or expense arising from the use of any weapon of war employing atomic or nuclear fission and/or fusion or other like reaction or radioactive force or matter.

EXCLUSIONS 4在任何情况下都不得这个保险 4.1损失损害或费用的原因故意的不当行为的保证 4.2普通渗漏，普通的损失重量或体积，或普通磨损的标的物投保 4.3损坏或丢失所造成的费用不足或不适合的包装或准备受保标的物（目的是这一条款4.3 &包装&应视为包括存放在容器或liftvan但只有当这些堆放进行之前扣押保险或担保或其雇员） 4.4损坏或丢失所造成的牺牲固有的副总裁或性质的标的物投保 4.5损坏或损失近牺牲所造成的延误，即使是延迟所造成的风险保险（除费用缴付根据第2段） 4.6损失损害或费用所产生的破产或财务预设的业主管理人员承租人或经营者的船只 4.7故意损坏或蓄意破坏受保标的物或其任何部分的不法行为，任何人 4.8损失损害或费用的使用中出现的任何战争武器的使用原子或核裂变和/或融合或其他类似反应或放射性武力或事项。

Secondly, the quality loss model of the quality control, quality problem tracing back and the quality improvement is constructed, which minimizes the quality loss in quality control system. The quality loss model combined with Duncan model and Taguchi quality loss model is studied, the control parameters such as the upper control limit and the lower control limit are computed for the quality control in manufacturing. The Taguchi quality loss model is improved with the fuzzy theory, and the validity of the quality loss model is validated by the instance of the principal axis quality control.

2构建了产品质量控制、质量问题追踪和质量改进的质量损失模型，使质量控制系统运行过程中质量损失最小；研究了由Duncan模型和田口质量损失模型相结合的质量损失分析模型，为过程质量控制提供了上下控制限等参数，利用模糊理论对田口质量损失模型进行了改进，并通过主轴质量控制实例验证了质量控制损失模型的有效性。

Bindings worn, some corners showing cardboard at tips, hinges rubbed, most hinges starting to crack at top and bottom, 3 upper hinges cracked along half the length but covers still holding, some spines slightly chipped at top or bottom, title label missing on Volume I, label slightly chipped on 3 volumes, inscription to all pastedowns, occasional light staining and light soiling mainly to margins and chiefly in Volume I, some ink splashed on fore-edges of Volume II, just showing at edge of title page, small piece torn from fore-edge of 1 page in Volume I with loss of about 3 words on recto and verso, small closed tear to margin in Volume III, 2 in Volume IV, 1 just entering text, all neatly repaired with no loss of text, small piece missing from 1 corner in Volume V, no loss of text, title page of Volume VII slightly browned and with small piece missing from fore-edge margin, small hole in 1 text page with loss of a few letters, all still easily legible, map of the world has several repairs to reverse, no loss of image, plus several misfolds, lightly browned along 1 vertical fold, some calculations in old ink on reverse of 1 map, tiny hole in 1 map with very slight loss, a small brown stain to 1 plate, 3 tiny holes in lower margin of 1 plate.

条件绑定破旧，在一些弯道显示提示纸板，摩擦铰链，铰链最开始打击在顶部和底部，3上铰链沿长度的一半，但其涵盖破获仍然持有，有些刺略有顶部或底部缺口，标题标签上卷失踪一，标签上稍微切3卷，所有pastedowns题词，偶尔光染色和轻弄脏主要是利润率和主要余卷，一些墨水溅到突出，第二卷的边缘，就显示在标题页的边缘，小件撕裂的前奏，1页边卷约3对直肠和Verso的损失我的话，小封闭撕裂，在第三卷，第四卷2，1只输入文本，所有整齐，没有文字的损失修复保证金，从一小块角落的第五卷，没有文字的损失，卷扉页七略变黄，并从一小块突出失踪的边缘利润，在1文字页小孔与几个字母损失失踪，所有仍然很容易辨认，在世界地图上有几个维修扭转，没有形象的损失，再加上一些变异，轻轻沿1垂直倍褐变，在对1地图，地图上，在一洞非常小的损失，改变旧墨水一些计算小褐变1盘，3小孔低1板块边缘。

In the second part of this book, I will work with you to analyze the Chinese culture and the performance of the four at a loss: the first is the Chinese people at a loss to know to make money to make money can have no sense of social responsibility and morality; the second is that we This loss of self-culture of the outside world to understand the lack of real, hard to understand but also impetuous to stay on the surface; This will lead to a third loss, that is, we rarely understand how others view us, we usually only concerned about their views at a loss, not to think about the root causes behind these views where; Fourth, more tragically, with others compared to our understanding, we are at a loss of their shortcomings and lack of recognition of the profound knowledge and self-examination.

在本书的第二部分，我会与大家一起分析中华文化的四个茫然表现：第一就是中国人就知道茫然地赚钱，为了赚钱可以没有任何社会责任感和道德感；第二就是我们这个文化茫然的自闭，对外面的世界缺少真正的理解，好不容易有所了解也只是浮躁地停留在表面；这样就导致第三个茫然，即我们也很少明白别人如何来看我们，我们通常只是茫然地关注其看法，而不去思考这些看法背后的根源在哪里；第四，更可悲的是，与别人对我们的了解相比，我们对自己的缺点是茫然的，缺乏深刻的认知和反省。

Result The results showed that the cutting survival rate and propagation coefficient were higher in interlayer scale, the difference of which was not obvious between outside and inside scales. Compared with integrated scale, cross cutting and score cutting scale all could reduce scale propagation coefficient Treating scale with 0.1% HgCl2 could prevent scale rot effectively and increase propagation coefficient Integrated scale without segmentation was good for lily bud scale cutting.

结果］结果表明：中层鳞片的扦插成活率较高，繁殖系数也较高，外层与内层鳞片之间的差异不明显；与完整鳞片相比，横切鳞片和纵切鳞片都会降低鳞片繁殖系数；用0.1% HgCl2处理鳞片，可有效防止磷片腐烂，提高繁殖系数。

In this paper, by using the method of expanding the hard-edge aperture function into a finite sum of complex Gaussian functions, the recurrence propagation expression for the propagation of partially coherent beams through a multiple apertured ABCD optical system is derived, which provides a fast algorithm for simulating the propagation of partially coherent beams through hard-aperture optics.

用有限个复高斯函数之和来逼近硬边光阑窗函数的方法，推导出了部分相干光通过多个硬边光阑ABCD光学系统传输的递推公式，提供了一种模拟部分相干光通过硬边光学系统传输的快速算法。

In the traditional GSM network planning, the revised Hata model serves as the prototype, and the coefficient in the model formula is tuned according to the data obtained in the radio propagation feature test specific to local actual radio environment, so as to obtain the propagation model for practical prediction. A common digital map only contains the clutter information and the digital terrain model information. So the building designers cannot fully allow for the influence of radio propagation, and can only estimate the influence on the building roughly from a traditional perspective, e.g., consider the influence of different clutters through certain clutter offset.

在传统的GSM网络规划中，一般都以修正的Hata模型为原型，再利用规划软件通过导入针对当地的实际无线环境做无线传播特性测试所得的数据对模型公式中的系数进行修正而得到实际预测用的传播模型，一般使用的数字地图仅包括地物信息和高程信息，因此建筑物对无线传播的影响无法充分考虑，只能从统计意义上对建筑物的影响进行粗略的估计，如通过一定的地物偏移来考虑不同地物的影响。

The propagation matrix method used widely in stratified media is extended to laterally inho-mogeneous media,and a numerical method known as generalized propagation matrix method for simulating elastic seismic wave propagation in inhomogeneous media is presented by using mixed variable elastic wave equation and matrix exponent solution of system of linear ordinary differential equations.

应用混合变量弹性动力学方程和线性常微分方程组的矩阵指数解法，将层状介质中广泛应用的弹性波传播矩阵解法推广至横向非均匀介质，给出了一种可计算复杂地质体中弹性波传播的广义传播矩阵数值解法。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。