查询词典 muzzle-loading

The design mains design about the loading-machine department of continuous-type caterpillar band coal-loading machine, the loading department uses the spider loading, the transportation system uses the scraper conveyer, the loading department and the department of transportation uses in common a group of oil motor to actuate, to take the place of the reduction gear, which makes the machine structure to be more compact and the revolution to be more coordinated, reduced the breakdown.

本设计是对连续式履带装煤机的装运部进行设计，装载部采用的是星轮装载，运输系统采用刮板输送机，装载部和运输部共用一组液压马达驱动，取消装载减速器，使机器结构更加紧凑，运转更加协调，减少了故障。

Two main types of muzzle brakes named baffle type and light weight type have been designed for carrying out the simulation and analysis of muzzle flow in this research. The utilizing of parameters from simulations and some given conditions to impact deflectors of muzzle brakes to make the recoil part get a momentum to move forward in order to lower recoil force have been expressed in this research as well.

中文摘要本研究以折流板及轻量化两种主要炮口制退器设计，进行炮口流场分析模拟，得到炮口周围之压力、气流速度、密度及温度等分布状况；并利用模拟所获得之数据配合已知之炮口条件冲击炮口制退器之折流板，造成火炮后座部份向前之动量，用以降低后座力，求出火炮装置炮口制退器后，以炮口效率为主之各项相关参数。

Based on the simulation of 3D unsteady muzzle brake flow field, computed the force given to the barrel while the powder flow through the muzzle brake, calculated the max backlash velocity, and lastly got the efficiency of muzzle brake.

该方法以带炮口制退器三维非定常流场的数值模拟为基础，通过计算火药气体流经制退器时火炮身管的受力，计算出身管在火药气体作用下的最大自由后坐速度，进而根据制退器效率的定义得到炮口制退器的效率。

By calculating the equivalent loading,the process of strength degradation under random loading was transformed into a process under the deterministic loading,and the relationship between reliability andtimes of loading action was obtained.Besides,the time-dependent reliability models under multi-loadings were established by analyzing the relationship between action times of different loadings and time.

该模型通过计算当量载荷，将随机载荷作用下的强度退化过程等效为确定性载荷作用下的退化过程，得到零件可靠度与载荷作用次数的关系，在此基础上，通过分析不同载荷出现次数与时间的关系，得到多个载荷共同作用下零件可靠度随时间的变化规律。

Based on the analysis of finished auto's loading/unloading process of AnJi-TNT Logistics, propose the maximum transportation capacity optimization of every Car-carrier loading with different goods-cars. Construct the scheme database of optimization for Car-carriers'loading in SQL-server 2000 database software. The optimization toward loading orders in customization is resolved with maximum transportation's capacity algorithm and matching scale method with Visual Basic background.

本文结合安吉天地汽车物流有限公司整车物流调度系统的配载流程进行分析，通过整数规划计算出每辆轿运车针对不同商品车的最大运能配载方案，在SQL-Server数据库平台下，对这些最大运能配载方案按一定规则保存并进行数据库的管理，最后利用事例推理在Visual Basic开发环境下提供面向客户混装订单的轿运车配载方案优化的解决方案，并进行了实例验证。

Finite element software ANSYS was employed to investigate the mechanical response of asphalt pavement structure under the axisymmetrical dynamic loading,and different loading period,loading amplitude and loading form were discussed in detail.

运用有限元程序ANSYS，采用轴对称模型，求出了沥青路面在动荷载作用下的力学响应，并针对不同的荷载作用周期、荷载幅值以及不同的荷载作用形式进行了详细的分析与讨论。

In Chapter Four, the surface fracture was studied for a functionally graded plate with a semi-elliptical surface crack under state thermal loading, and studied the influence of crack sizes, aspect ratios and material property on the stress intensity factors along a crack-front under two types thermal loading: calefactive state thermal loading and descent state thermal loading.

第四章研究了含有半椭圆表面裂纹的功能梯度材料板条在稳态温度热载荷作用下的裂纹问题分析，着重考虑了升温载荷及降温载荷作用下应力强度因子在裂纹前沿的分布及材料梯度及裂纹与板的几何尺寸对应力强度因子的影响。

In studies of interaction among pile, platform that above it and surrounding soil, this paper employ the concept of plate element to simulate the loading character of platform, and employ the concept of solid element to simulate the character of pile and soil, using the finite element method after understanding the geometry properties of pile, soil and the platform. Analyzing the loading properties of the three entities above and their deformation, this paper also employ a special element, Penalty Element. The introduction of penalty element of this kind has served to guarantee the join harmony of displacement between solid element and plate element, thereby effectively resolving the join problem between platforms, pile that support it and surrounding soil.Considering significant property difference between pile material and its surrounding soil, there may be much shear stress on their contact interface produced under vertical load, thus causing displacement or fission. Therefore it is necessary to adopt one special constitutive law of this kind of contact interface, which can reflect its feature of loading and deformation thoroughly. On the basis of the deformation feature and constitutive laws of some contact interface obtained by Zhang Dongji and people concerned through some single-shear experiments on contact interface between structure and soil, this paper employ one pile-soil three-dimensional constant thickness contact interface model to simulate the " slide" taken place on the interface between pile and its surrounding soil. With this kind model, this paper has also created one finite element model, which can be applied to perform finite element calculation and analyze the pile-loading feature, and deduced its element stiffness matrix.

在承台-桩-土共同作用中，考虑桩与承台的几何特性，采用有限元方法，用实体单元模拟桩土，用板单元模拟承台，更具体地分析桩和承台的受力特性和变形，而且还采用罚单元—既实体单元与板单元之间连接必须满足变形协调条件，来有效地解决了承台与桩土的连接问题，且在桩土共同作用中，由于桩体结构的材料性能与周围土层性质相差较大，在竖向荷载下有可能在其接触面上产生较大的剪应力从而导致错动或开裂，因此，为了充分反映桩土接触面上的受力及变形特征，应采用一种桩土接触面特有的本构关系，即利用张冬霁等人关于结构与土体接触面单剪试验所得到的接触面变形特征及其本构关系，引入桩-土三维等厚度接触单元来模拟桩与桩侧土之间的&滑移&，在此基础上建立可用于桩基承载性状分析的有限元计算单元模型，并推导出了各单元的刚度矩阵。

So it is important to make research on muzzle flowfield, and analyze the effects of muzzle blast wave on the firing precision of gun.

所以对膛口流场进行研究，并分析膛口流场对弹丸的影响，对于指导实验和改进火炮射击精度很有意义。

By using unstructured dynamic grid based on local remeshing method, the variation of grid caused by projectile movement was analyzed. Numerical computation results of gun muzzle flow field which arranged in time was obtained. The creation process of the complex flow field of gun muzzle was described. The numerical simulation of flow field including moving projectile was achieved.

采用基于局部网格重构法的非结构动网格技术处理弹丸运动造成的网格变化，给出一系列按时间顺序排列的膛口流场数值计算结果，描述了复杂的膛口流场形成发展过程，实现了含运动弹丸的膛口流场的数值模拟。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。