上模

To prove our theory, we have done some experiments: 1 observed the focusing and scanning of the longitudinal wave in isotropic solid ; 2 measured the transition process and weighting effect in isotropic solid; 3 observed the focusing of SAW wave on YZ-LiNbO〓 metaled surface and defocusing as deviation from the pure-mode direction.

为了验证理论，本文用声光衍射的方法观察了：(1)各向同性的Fused SiO〓固体中纵波声束的会聚及焦点沿轴线的扫描；(2)表面阵列在Fused SiO〓固体中纵波+1级会聚的过渡现象；(3)YZ-LiN-bO〓金属化表面上表面波在纯模方向的会聚以及对称轴线偏离纯模方向时严重的散焦。

Beginning with raising the signal noise ratio of the global identification, the global identification method weighted with modal shapes is presented, which permutes and composes the elements of FRF in the form of the sum of modal shape squares and obtains global modal parameters with relatively high SNR.

本文在综合分析现代模态分析领域国内外现状的基础上，以学科的一些难点为研究对象，对系统模态参数识别、动态建模、动态修改领域存在的问题进行了广泛深入的研究，取得了一系列独创性的研究成果。

A threaded shank portion positioned distal to the smooth shank portion includes a male thread which is sufficiently strong to have a swage collar swaged onto it.

位于光滑轴部分远侧的螺纹轴部分(38)包括一个外螺纹，其强度足以让一个模锻套环(46)能够被模锻到其上。

Die edge bevel edge fangzheng, existing is not enough, the tightening of the vulnerable after starting kungsi, die tightening, and embossing plate the local deformation, edgwise, and so on will line indentation.

模切版边缘不够方正、存在斜边情况时，紧固后的版容易出现起弓现象；模切版的紧固过度，以及压印平板上的铁板局部出现变形、起弓等情况，都会造成压痕线爆裂。

They adopt of make a mold craft, vacuum help resin jet the craft can make the carriage mold into top and bottom twos are whole, end again match two is a, not only produce an efficiency high, and the carriage strength strengthen consumedly, being creating new style in the world.

它们采用的制模工艺，真空助力树脂喷射工艺能将车身模制成上下两个整体，最后再合二为一，不仅生产效率高，而且车身强度大大增强，在世界上独树一帜。

In this study, the dynamic effect of different types of motor rotor, including the interference fit and clearance fit, are discussed by the experiment of modal testing and theoretical analysis.

本文藉由模态测试与分析分别探讨马达转子干涉配合及间隙配合於心轴上所造成的动态特性影响，并提出可的有限元素建模方式，藉由模态测试与有限元分析结果的比对显示，证明此种建模方式之确性，能做为未工具机主轴设计开发考。

The characteristics and application for designing the die flash groove of hot die forging were investigated.

探讨了在热模锻模具上设计飞边槽的特点及应用，介绍并分析了飞边槽对热模锻模具使用寿命的影响和对热锻件产品质量的影响。

On the basis of setting up mathematical model on blowing energy of 50KJ hydraulic die forging hammer, through simulation analysis, the relation curve of the blowing route and the blowing energy have been attained under the certainly filled atmospheric pressure and the height of loaded die, and the calculation result of simulation has been validated by experiment.

新闻摘要：在建立了50kJ液压模锻锤打击能量的数学模型的基础上，经过仿真分析，得出了在一定充气压力及装模高度下的打击行程与打击能量的关系曲线，并对仿真计算结果进行了实验验证。

Was first established in plexiglass products design, production, production for the main direction, and gradually has opened mold, fuel injection, silk screening, sanding, bending, laser cutting, sculpture, bonding, grinding polishing, molding die, such as Technological aspects of professional skills, good cost control.

公司成立初期以有机玻璃制品设计，制作、生产为主体方向，逐步拥有了开模、喷油、丝印、磨砂、热弯、激光切割、雕刻、粘接、打磨抛光、压模成型等各项工艺环节上的专业技术，成本控制好。

Jig drilling units are set up for the location of holes to be machined precision jig fixture at all types of machine tools accounted for the largest proportion.

钻模上均设置钻套，用以被加工孔的位置精度，钻模在各类机床夹具中占的比重最大。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。