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Aimed at rapidity and low power consumption required by intelligent mines,based on correlation theory and pattern recognition technology,a new method is given,in which helicopter noise signal of time domain is analyzed directly,that is to estimate fundamental frequency by calculating self-correlation function,then recognize target thinking of the fundamental frequency as characteristic quantity.

预警识别是被动声探测的关键技术之一，其作用是探测环境噪声信号作为预警信号，当直升机或其它目标出现时，传声器检测到的声能首先被转化为一定幅度的电压信号，电路通过判断信号的大小和其它特征来确定是否出现直升机目标。

The labor of the Marxism and labor value theory are the scientific system with an extremely rich content, announced the moving characteristic of capitalist at that time producer type and fundamental contradiction.

马克思主义的劳动和劳动价值理论是一个内容极其丰富的科学体系，揭示了当时资本主义的生产方式的运行特点和基本矛盾。

This fungicide is the biggest characteristic of sterilization speed, and can rapidly degrading into non-toxic products, equipment and not to cause environmental harm.

这种杀菌剂的最大特点就是杀菌速度快，并能快速降解成无毒产品，对设备及环境不造成危害。

Band 1, 5, 6 on biomembrane was the characteristic bands on 8, 12, 16 day resp. Beside Pseudomonas lubricans, others were all fungoid without cultured or named.

Band1、5、6分别是生物膜上第8、12、16天出现的特征性条带，除假单胞菌属外，其他结果均为未得到分离培养或者未经过命名的菌类。

After testing the compound formulation and determining the characteristic, the special compound for special rubber jump for funnel chest flattering apparatus was prepared based on NR/cis-BR with excellent physical property, elasticity and meeting the performance requirement.

以天然橡胶与顺丁橡胶并用胶为基础材料，通过胶料配方试验及性能测试，制得了具有优良物性、回弹性和符合使用要求的漏斗胸矫治器橡胶泵专用胶料，并确定了生产配方和工艺条件。

Fuzziness is one major characteristic of the Chinese tradition legislation.

模糊性是中国传统立法的一大特点。

The basic principle and the characteristic of fuzzy control and the design method of fuzzy logic controller are also introduced.

接下来对DSP也作了一个简单介绍，并介绍了模糊控制原理、特点及模糊控制器的设计方法。

Homogeneous enhancement after intraenous gadolinium is characteristic, although there are ariations in enhancement patterns.

虽然在增强模式下静脉造影后的表现也有区别，但其特征性的表现为均匀增强。

This paper mainly consists of three parts:(1) Based on the Reddy's higher-order shear deformation plate theory and general von Kármán-type equations, put forward the governing equations of pre- and post-buckled vibration of several hybrid FGM plate forms which have not been studied adequately, triumphantly applying the perturbation technique combined with Galerkin method into equations solving, and get the comparatively simple result forms with complicated deduction at last;(2) As a new type of materials, piezoelectric fiber reinforced composite actuators were applied to optimal vibration control, interrelated informatons be depicted in this paper;(3) During the investigative cource, some factors not been considered adequently in other researches were discussed fully in the postbuckled vibration analysis, such as the temperature-dependent material coefficients, heat conduction and nonlinear vibration characteristic etc.

本文的研究工作主要包括：(1)基于Reddy高阶剪切变形板理论和广义Kármán型方程，给出了几类现有研究成果较少或没有彻底解决的FGM混合板结构的屈曲前和屈曲后振动特性研究的控制方程，成功将摄动-Galerkin混合法应用于求解过程，并给出了各控制方程相对直观且易于计算的解析解形式；(2)单向压电纤维增强复合材料(Piezoelectric Fiber Reinforced Composite，简称PFRC)是一种新型压电材料，本文将其应用到了结构振动控制研究当中，发现通过压电纤维体积含量的选择可以实现混合板结构的优化振动控制；(3)围绕几种有代表性的FGM混合板结构，讨论其屈曲后的振动特性，在分析中同时考虑热传导，材料物性参数的温度相关性，以及机/热/电荷载耦合效应对非线性振动特性的影响，最后给出了大量数值计算结果。

Of or relating to or characteristic of the Scottish district of Galloway or its people.

属于或关于苏格兰加洛维区、苏格兰加洛维区人的，或有其特点的。

Great. What repertoire did you see?

太棒了。你看的是什么剧目？

I prepared not to accept such ridiculousness:"Please," I said to him.

我可不想理会这套荒谬的东西："请你通情达理一点儿。"