查询词典 cartridge case

In order to solve these two problems, the marks left on the warhead and cartridge case should be tested.

要解决这两个问题，就要检验留在弹头、弹壳上的痕迹。

Diagnostic technique and system for the examination of the adhesive quality of combustible cartridge case s are studied.

本文研究了可燃药筒粘结质量的声脉冲诊断技术与系统。

Same cartridge case also can be loaded with full-caliber 6.5mm bullets of various design.

同样的弹壳也可以以全口径6.5毫米的各种设计子弹。

The identification method for the fuzzy model of marks on the cartridge case is presented.

提出了一种弹壳痕迹模糊模式识别方法，并论述这种方法的使用范围及性能特点，为枪弹痕迹的司法鉴定提供一种新的手段，扩展了司法弹道学研究思路。

In the evolution of automatic weapon, the design of cartridge-case and chamber systempossesses a very important position. The system composed of cartridge case and chamberis one of the essential parts of bullet.

在自动武器发展中，弹壳弹膛系统的设计具有很重要的位置，它是枪弹的重要组成部分。

The cartridge case endures the load of pressure and heat generated from the powder gas when shooting. The strength of the cartridge case and the reliability of the extraction influence the performance of the weapon.

射击过程中，弹壳承受着火药燃气的压力作用和热作用，弹壳的强度及抽壳可靠性直接影响着武器的使用性能。

Through the inversion based on finite element analysis, it is revealed that the transient temperature rise on the case body,as a result of firing heat impact,is a key factor dominating the residual deformation and extraction resistance of the cartridge case. The distribution of transient temperature increment on case body is also obtained.

通过有限元反演计算，揭示了筒体上热冲击引起的瞬态温升是决定药筒残余变形和抽壳阻力的一个关键因素，得到了筒体瞬态温度增量分布规律。

This type of action has no slow initial extraction (the Garand used a turning bolt that moved the case slightly to the rear as it turned) so it tended to tear the head off the cartridge case during the extraction cycle.

这类行动并没有放慢的初步提取（伽兰德使用的一个转折点螺栓感动了案件略有后方，因为它打开），所以往往在提取撕裂周期关闭弹壳头。

According to the structure and work principle of the bore evacuator and the principle of combustible cartridge case , the main reasons of the fire in combat room are low reliability of bore evacuator and incomplete combustion of combustible case.

根据某自行火炮抽气装置结构与工作原理以及可燃药筒燃烧机理，得出抽气装置抽气可靠性差与半可燃药筒燃烧不完全是战斗室失火主要原因，给出了抽气装置抽气可靠性计算模型，并分析了影响抽气装置抽气可靠性诸因素，提出了该自行火炮抽气装置结构改进建议；分析了半可燃药筒燃烧不完全原因，提出了半可燃药筒制造与验收及使用注意事项。这对于自行火炮的设计与使用均有一定的参考价值

Incurrent research, aiming at the rupture problem engendered in the shooting process of acertain 5.56mm automatic rifle, the strain and stress distributions on the cartridge caseunder the action of axial pull have been analyzed. Based on the theories of elastic-plasticmechanics and contact mechanics, a mathematic and physical model of the cartridge-caseand chamber system has been set up; and based on the platform of the general softwarepackage APDL of ANSYS for finite element analysis, a parameterized model of thecartridge-case and chamber system has also been established. The method for nonlinearFEA has been adopted to analyze the stress distribution on the entire cartridge-case andchamber system, and the method of contact element has been employed to investigate thecontact stress between the cartridge case and chamber, and then the influences of frictioncoefficient and locking space on the static and dynamic stress and strain response of thecartridge case and chamber to the action of power gas have also been discussed. On thebasis of a lot of numerical tests, a kind of element Plane13, which is concentrated incoupled computation of heat and construction, has been used finally to simulate thetransient response of the cartridge-case and chamber system to the power gas. Throughloading the temporary thermal characteristics of explosive gas in the procedure of emulate, the corresponding transient thermal stress distributed on the entire system under thecombined load of transient thermal stress and transient pressure has been obtained. Owingto these comprehensive considerations, the numerical results obtained in this paperrepresent the actual situations comparatively exactly.

本文针对某5.56mm自动步枪在工作中出现断壳的问题，分析了弹壳在轴向拉力作用下的应力应变；基于弹塑性力学及接触理论，建立了弹壳弹膛系统的数学、物理学模型，在通用有限元ANSYS软件的参数化建模工具APDL平台上，建立了弹壳弹膛系统的参数化模型；采用非线性有限元法计算了弹壳弹膛系统的整体应力，引入接触单元法分析弹壳和弹膛的接触压力，探讨了在不同的摩擦系数和不同的闭锁间隙对弹壳弹膛静、动态响应的影响；本文进行了大量的尝试，最后确定采用热、结构耦合单元Plane13，在计算中加载了火药气体的温度历程，成功的获得了弹壳弹膛系统在瞬态的热载荷和瞬态的压力载荷同时作用下弹壳弹膛系统的热应力数值解，考虑因素全面，比较真实的反映了弹壳弹膛系统在火药气体压力和热载荷下作用的情况。

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。