压下的

The shaping course of Fine blanking is very complex. Material forms a local plastic cutting area between punch and bottom die, and brings violent plastic flow under the effect of press stress. The grad of stress and strain is great, and it is an unstable transmutation process that came through an elastic distortion, plastic distortion and cut rupture.

精冲成形过程非常复杂，材料在狭窄的凸、凹模间隙附近形成了局部塑性剪切带，在压应力的作用下产生强烈的塑性流动，应力应变梯度很大，是一个经历弹性变形、塑性变形和剪切断裂的非稳态大变形过程。

Moreover, this article has made a quantitative research of ship s leeway and drift angle s in different wind and currents after maneuvering.

本文在船舶平面操纵运动数学模型的基础上，建立了考虑浅水以及风、流干扰力和力矩作用的船舶操纵运动数学模型，并就船舶在横风横流作用下的风流压差角进行了定量的研究。

All mechanical loads are considered, including internal pressure, gravity, wind load and earthquake load, in which the modal analysis of the drum, functional wind load and temporal analysis for earthquake are the innovations of this paper.

分析焦炭塔在机械载荷，如内压、自重、风载和地震载荷作用下的应力情况，其中塔体的模态分析、风载的函数加载和地震载荷的时程分析是本文的创新。

Findings-The inner flow field changes quickly according to 1 gas inject velocity; 2 surrounding air temperature and pressure, and 3 position of jet nozzle and air inlet. The aim of this project is to find an optimum position and geometry for gas generator and inlet opening that can provide a high aspiration ratio for the new design inflator.

在一封闭空间中外围空气可藉由进气道吸入其中，空气由进气道被吸入的气体会因著喷场的速、周遭环境的温与压、喷嘴与进气道的几何形及其相对应的装置位置等因素而改变，且受后端气囊在震波冲击下的开启运动而影响。

The results indicate that a small amount of Cerium-rich Mischmetal addition refine microstructure and increase ...

因此，压铸AZ81的常温和150℃抗拉强度和屈服强度随稀土加入量的增加先略有提高，然后持续降低；室温延伸率随稀土加入量增加而连续下降，对150℃温度下的延伸率无明显影响；但富铈混合稀土的加入显著提高合金的蠕变抗力。

The disturbing rields caused by the speedup and quietude of upper crustal movement in Tibetan Plateau indicate that, when the upper crust movement is speedup in Tibetan Plateau and keeps the boundary condition unchanged, the energy stored in upper crust is released, the driving force by Indian plate increases the horizontal compression stress and movement in other layers in Tibetan Plateau, and increase the horizontal compression stress in the whole geosphere in North China area Comparing the disturbing distribution of horizontal compression stress in the upper mantle layer, the value in North China area is only about one twelfths of that in south part of Tibetan Plateau.

3青藏高原地区地壳非均匀活动在中国大陆岩石层引起扰动场的研究结果表明，在保持板块边界作用强度不变的情况下，青藏高原地区岩石层上部地壳运动的增强，增加了其岩石层下部的向前推挤，同时也增加了对其它块体的推挤作用，以上地幔盖层内最大水平主压应力的扰动值为例，华北地区比青藏高原南部地区小一个量级。

In this way, the simulation of actualseepage fields in complicated site and construction conditions were made in order tohave a deep view of the general rules of seepages in earth dam, and illuminate laws ofmain physical quantities.

通过土坝渗流场的三维非稳定分析，以期达到对土坝渗流场实际复杂情况的模拟，比较理想地反映不同时段的土坝渗流场中等势线、流速矢量、无压渗流场自由面以及流量等渗流要素在不同条件下的变化规律，从而在一定程度上弥补过去对土坝渗流场研究的不足。

The experimental velocities cover subsonic,transonic and supersonic flows,and the content includes:(1) flow over flat plate,revolution body and wing with riblets surface at zero angle of attack;(2) the effect of pressure gradient,angle of attack and slide angle;(3) the burst characteristics,characteristics of turbulence,the streak structure in the near wall region and the drag reduction mechanism.

内容涉及沟槽面平板、旋成体、机翼等在压、跨、超音速流动情况下的实验研究成果；压力梯度、攻角、侧滑角等的影响；湍流猝发特性、紊动特性、近壁区带条结构的特征及减阻机理等方面的工作。

The primary work and remarks of the paper are as follows:(1) Stress intensity factors of gun barrel under inner pressure are obtained by finite element method. The accuracy of displacement method and stress method are compared. Some patterns of dynamic stress intensity factor are studied.

论文所做的主要工作和研究成果如下：(1)通过有限元方法计算了身管在内压作用下的应力强度因子，比较了位移法和应力法的精度，并且研究了动态应力强度因子的规律性。

Most of existing air-cushion vehicles are hybrid vehicles, that mains one vehicle consists of a air-cushion platform used to carry and a set of walking mechanism used to provide driving power. Wheel, track and walking wheel are three main kinds of the walking mechanisms on the developed air-cushion vehicles.

气垫车辆具有极低的接地比压值，与其它的特种车辆相比，单位面积上的承载力要大得多，非常适用于松软地域下的低速重载运输，因而逐渐成为车辆软地面行驶的主要研究对象。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。