查询词典 paper-mache

This paper combines with pipeline delivery of our countrys actual conditions and other methods of detection and location. To the leakage characteristic of the fault to the long-distance natural gas pipeline, a method is raised, which is on the basis of wavelet and negative-pressure-wave to detect the leakage and locate. Jobs in this paper are as follows:Multi-resolution decomposition and reconstruction of wavelet transform is utilized to filter the noises, which the leakage brings the noises of negative-pressure-wave. The research is worked in the wavelet and wavelet packet filter. The wavelet transform have a fast and accurate recognition capability to signal singularity. This paper chooses wavelet technology to catch the break point of pressure signal.

本文结合我国管道输送的实际情况和目前现有的各种泄漏检测与定位方法，针对天然气长输管线泄漏故障的特点，提出了基于小波分析和负压波相结合的方法检测泄漏并定位，其中主要进行了以下几个方面的工作：利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行降噪处理，并对小波及小波包优化的降噪效果进行对比性研究；利用小波变换技术对信号奇异点的快速、准确的识别能力，捕捉负压波信号的突变点，从而判断是否有泄漏发生。

On one hand, the paper analyze the international collaboration of China's scientific literature from three perspectives of country, cities and universities, which found the growth trend of international collaboration of China's scientific literature; and based on metrics of international collaboration of Chinese main cities and universities, the paper reveals the Comulated distribution effect of collaboration. On the other hand, from the perspective of domestic collaboration of Chinese main cities and univerisities, the paper analyzes the coauthorship network.

其次，运用社会网络分析方法，以科学论文的合作作为计量科学生产关系的切入点，论文一方面从国家、城市、大学的层面计量了中国科学论文的国际合作状况，发现中国科学论文国际合作总体处于增长趋势，通过对中国及中国主要城市与国外的论文合作状况进行的计量，发现论文合作累积数量的指数分布效应。

This paper quantitates financial risk by constituting the model of measurement financial risk. And the samples are from the public companies'merger and acquisition from 2002 to 2005, this paper demonstrates perfectly the influence of financial risk of acquisition companies from different payment methods. The result of test analysis shows: in one side, the theory of risk-return is unfit in China (by being educed conclusions by other students: different payment methods bring different return, then the author detrusions different payment methods bringing different financial risk, and being tested direct proportion each other); in the other side, this paper answers different payment methods bringing different degree financial risk of acquisition companies: the smallest financial risk from cash payment method, the mean from commingle payment method, the biggest from stock payment method, which can supply reference in the choice of rational companies between payment methods and financial risk .

通过建立企业财务风险度量模型，将企业财务风险量化，并以中国上市公司2002年—2005年间的并购案中所采用的支付方式为样本，对我国上市公司并购中不同支付方式对并购方财务风险的影响做一个较系统、完善的实证检验，一方面从理论上验证了风险-收益理论的在我国的不具有适用性（通过对前人研究结论：不同支付方式带来不同收益，进而反推不同支付方式带来不同的财务风险，验证得出二者成正比关系）；另一方面回答在我国目前市场条件下并购中的不同支付方式引起收购公司不同程度的财务风险，其中现金支付方式下给收购公司带来的财务风险最小；混合支付次之，股票支付方式下财务风险最大，能给企业在并购时选择支付方式与财务风险的最佳组合提供参考。

In addition business card printing and membership card before the spray Al paper store, stack height knife; two pallets, spray Al paper store, face down the so-called eyes up to the sky, so as to prevent paper conglutinate or surface damage.

另边制卡和会员卡制作后的喷铝纸保存时，堆叠矮度答刀；于两个货不活，卷筒喷铝纸保存时，端背早下，以避免引起纸张的粘连或暗不天保养题目。

Because the effects of static electricity, and some will make the paper in the paper tape on the position to turn aside, the side or front edge of the regulation cannot, the base was taken into the arrival and departure of the calibration paper is also easy to normal; because dual-Zhang conglutinate, double sheet of fault arising out of the auto-stop, affecting efficiency.

因为静电的感化，有的会使纸弛在负纸带上爆不收场所垂直，侧规或后规无法举行基准边校准，不退到不收纸台时也易变态下落；因为独弛的粘连，还会呈现独弛障碍而爆不收被迫停机，感化了不败果。

Firstly, this paper investigated roundly the basic theory of the ambient vibration method, analyzed systematically the main methods of ambient vibration identification, and discussed their advantages and disadvantages. Then we established the finite element model of structural dynamics and test model and analyzed their mutual relation, improved MUSIC method and correlation function method in the harmonic identification, and gave the subspace method and correlation function method based on continuous model, which is multi-harmonic retrieve technique. And then, this paper also puts forward least-squares method to estimate directly structural physical and modal parameters; this approach replaced the derivative operator in the continuous time model with an equivalent approximation, and estimated the physical parameters of structures by the least-squares method. And then, we discussed the approximation methods of derivative and their convergence. Finally, this paper researched the modal parameters of a frame structure by the simulation and test. The results demonstrated that subspace method, correlation function method and the least-squares method are effective and stable respectively.

全面地研究环境振动识别方法的基本理论，系统地分析环境振动识别方法的主要方法，讨论它们的优点和不足；建立结(来源：6666AB44C论文网www.abclunwen.com)构动力学的有限元模型和试验模型，分析有限元模型与试验模型之间的相互关系；改进谐波识别中的MUSIC识别方法和相关函数识别方法，给出大型结构模态识别的连续型的子空间分解识别方法和相关函数识别方法，这个方法是多元谐波识别方法；提出直接识别结构的物理参数和模态参数的最小二乘方法，这个方法利用导数的近似值代替导数值，并运用最小二乘方法识别结构的物理参数，讨论导数近似值的选择方法，分析算法的收敛性；通过仿真计算和模型实验，研究高层框架结构的模态参数识别，验证子空间分解识别方法、相关函数识别方法和最小二乘识别方法的有效性，算法的稳定性；从理论和试验两个方面分析和研究噪声对识别精度的影响，影响识别精度的因素，以及部分模态成分的模态参数不能够被识别的原因。

This paper makes an analysis of the Doppler speed charts of clear weather and the echoes of large-area precipitation. It also singles out the Doppler speed charts of typical wind fields. In addition, this paper analyzes Doppler radars detecting process of the strong convection current weather system. It also conducts a thorough analysis of Doppler echo features of some hazardous weather, such as cell storm and downward storms. Based on this research and analysis, the paper reaches some important conclusions concerning the detecting methods using Doppler radar and the analysis of the information gathered by Doppler radar.

本文通过分析晴空和大面积降水回波的多普勒速度图像，归纳总结出了典型风场的多普勒速度图象，并着重分析了多普勒雷达对严重危害飞行安全的强对流天气系统的探测，特别是深入分析了超级单体风暴、下击暴流等灾害性天气的多普勒回波特征，得出了多普勒雷达对灾害性天气进行探测的方法、雷达资料分析应用等方面许多有益的结论。

The advertisement page can use no-carbon paper, offset paper, copperplate paper, plastic film and all prior materials which can be used in the offset printing.

该广告页可以采用无碳复写纸或胶版纸、铜版纸、塑料薄膜以及现有的可用于胶版印刷的全部材料。

GXJ type gluing machine is a special equipment that can not only glue thin paper、leather and corrugate paper, but also glue fiber paper with single/double side.

GXJ／JS型裱纸胶水机是一种主要用于印刷精品盒及纸箱，是对薄纸。

However, the use of paper in the business card printing and membership card making industry is inevitable, so Offset Impressions company is also focusing on the recovery of the paper, they are in 2008 a total of approximately 445 tonnes of recovered paper and corrugated board.

但是，纸张的使用在制卡和会员卡制作业中是无法避免的，因此Offset Impressions公司也特别注重对纸张的回收，他们在2008年共回收了大约445吨纸张和瓦楞纸。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。