查询词典 gun bore

To analyse the motion of in-bore projectile; We can get the acting force between the projectile and the gun tube, the motion of gun and the attitude of in-bore projectile at any time.

详细分析弹丸发射过程中火炮及弹丸的运动情况，能给出任意瞬时弹丸与身管之间的作用力，弹丸在膛内的姿态以及火炮的运动参数

Melt-erosion is one of the mechanisms in the erosion of gun bore surfaces.

熔化烧蚀是火炮身管内膛烧蚀的机理之一。

In AUPU War, widespread use of military Pu-loading convenience, fast firing line after the loaded gun bore.

在奥普战争中，普军广泛使用装弹方便、发射速度快的线膛后装炮。

Calculation of heat flux into the gun bore is very important for wear problems in the gun barrel and its thermo-mechanical properties.

确定发射时输入内膛壁的热流密度对研究烧蚀磨损以及身管的热力学特性等问题至关重要。

Aim and Methods\ Three methods are analysed and compared for measuring the lateral deflection of gun bore axis from firing plane and the deviation of the sight line from the barrel axis, according to the results measured in practice. Results\ The tested data show that this new method is accurate.

引 言在多次火炮总装测量检查中，我们发现用炮口瞄准仪测量&炮膛轴线偏离射面的偏离角&与&瞄准线偏移&和用经纬仪、炮口坐标尺测量这两个项目有一定的差别。

The dynamic medel and the differential equations of an unsymmetrical projectile traveling in a flexible, increasing twist rifled bore gun tube are developed in this paper. The equations can be used for the study of any case of a projectile traveling in the bore, i.

建立了非对称弹丸在挠性渐速膛线身管内的弹丸动力学模型和运动微分方程组，该方程组可用于对弹丸在渐速膛线身管内的任何情况(定心部不与膛壁接触、弹膛碰撞、贴膛)的运动进行求解。

Based on gun bore radial wear Δdmax as discrimination condition of barrel life the mathematical model for predicting melt-erosion of gun-barrel is established which is employed in analyzing factors affecting the life of gun such as material, gun powder,firing conditions and so on. It is pointed out that active cooling technology is an effective method for solving many problems concerned with heat transfer each time the gun is fired.

文中由身管寿命判别条件△d_建立了身管熔化烧蚀预测计算模型，从原理上对各种延缓烧蚀速度、提高身管寿命的措施，如采用内膛镀铬、使用冷火药和护膛剂等进行了阐述；同时基于该模型指出采用身管主动冷却技术是延长火炮身管寿命最有效的措施之一。

This thesis proposes a kind of soft firing technology , which combines interior ballistics with atmospheric pressure transmission theory , utilizing the energy of advancing primer ignition of piston promoting pill to counteract the counterforce of firing pill , utilizing unilateral valve on the piston to adjust automatically the gas pressures of two connected chamber in series in front and at the back of the piston, thus achieving the goal of reducing composition of forces of gun bore and increasing initial velocity of pill.

本论文提出一种软发射技术，是将气压传动理论和经典内弹道学相结合，利用活塞推动弹丸前冲击发的能量来抵消发射弹丸所产生的反作用力，利用活塞上的单向阀自动调节活塞前后两个串联药室的气体压力，从而达到减小炮膛合力和提高弹丸初速的目的。

Several nitramine propellants are quenched at different initial pressure(up to 300 MPa)by rapid pressure decay in a small-sized ballistic simulator, which is different from the ordinary vented chamber in that it creats the burning environment of the propellant similar to that gun bore,and that the initial pressure before the extinction are relatively high.

用改进的小型弹道模拟装置，对几种硝胺发射药做了中止燃烧实验，中止压力达300MPa，并对中止燃烧样品做了SEM电镜观察。

The research contents of this subject are mainly: Proposing the overall scheme of the soft firing technology, than confirm the best scheme; On the basis of best scheme , set up the mathematical model of soft firing system, and set up the interior ballistic trajectory calculating model among MATLAB/Simulink, set up soft the three-dimensional dynamics model of firing system among ADAMS; Go on joint simulation, simulating the characteristic curve of bore pressure and the sport law of piston and shot; Through adjusting the parameters such as piston quality、the diameter of unilateral valve、 charge weight、charge form coefficient and the delay time of lighting fire etc to make the soft firing system reach the best state of dropping the composition of forces of gun bore and increasing initial velocity of pill.

论文的研究内容主要是：提出软发射技术总体方案，确定最佳方案；在最佳方案的基础上，建立起软发射系统的数学模型，并在MATLAB/Simulink中建立内弹道计算仿真模型，在ADAMS中建立软发射系统的三维动力学模型；进行联合仿真，模拟膛压特征曲线及活塞和弹丸运动规律；通过对活塞质量、单向阀直径、装药量、药形系数、点火延迟时间等参数进行调整，使软发射系统达到炮膛合力下降、弹丸初速提高的最佳状态。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失