弹道的

Treatment of bladder stones with air pressure ballistic lithoclasty by cystoscopy or resectoscopy is simple and safe,being a kind of effective and minimal invasive technique for bladder stones.

经电切镜鞘途径气压弹道碎石治疗膀胱结石安全、疗效可靠、损伤小，是一种值得推广的高效微创技术。

Using shape function andclassical interior ballistics theory, the influence relation of the PSS model parameter affectto splitting opportunity, increasing burning surface and interior ballistics characteristicswas researched.The splitting opportunity of PSS appears ahead the academic intending, thereason is that the thickness of outside burning layer is asymmetry, the thinner area splitsearlier, and the thicker area splits later, consequently, the PSS put up progressivity burningeffect. From the practical look, the burning progressivity effect is more profitable than thatincreasing burning surface suddenly.

采用形状函数和经典内弹道理论，研究了PSS发射药的药型参数对分裂时机、燃烧增面性和内弹道性能的影响关系，PSS发射药的分裂时机比理论预计值提前出现，原因是外侧面的燃烧层厚度不均匀，薄的地方先分裂，厚的地方晚分裂，从而表现出了渐增性的燃烧效果，从应用的角度出发，渐增性燃烧的效果比突增的效果要好。

At last, the muzzle sinkage of rocket mechanics and effect are researched, and thechanging rule of the pitch angle, yaw angle, slope angel and offset angle are analysed. Whichis very necessary to simulation analysis on warhead sinkage.

最后，研究了炮口下沉的机理及影响，并对其进行了动力学仿真分析，得到了在不同射角情况下，火箭弹的俯仰、偏航、弹道倾角及弹道偏角的变化规律，对提高弹箭武器的射击精度具有一定的参考价值。

The measurement accuracy of the photoelectric theodolite is decided based on measurement requirement of the ballistic trajectory. Two simple equations were derived mathematically, one expression for positioning error of the ballistic trajectory, angle error of the photoelectric theodolite, ranging error, target slant range and height when one instrument is used, another expression for positioning error of the ballistic trajectory, angel error of the photoelectric theodolite, target slant range and intersection angle when two symmetrical intersection instruments are used.

通过数学解析的方法，推导建立了2个简洁的公式：1）单站定位体制下弹道点位精度和光电经纬仪测角、测距精度以及目标斜距、高角之间的数学表达式；2）对称交会测量体制下弹道点位精度和光电经纬仪测角精度以及目标斜距、交会角之间的数学表达式。

In this paper,the equation of angular speed and centrifugal acceleration on a part in the fuze is derived according to the movement of circumrotatory ammunition at exterior trajectory.

根据旋转弹丸在外弹道上的运动，推导出了引信零件在弹道上的运动角速度和离心加速度表达式，通过计算和模拟仿真得到了脉动的离心加速度曲线，在引信动态模拟装置上进行模拟测试，验证了理论分析的正确性，提出了通过直接计弹丸转数实现引信定距功能的方法。

The results show that the value of burning rate pressure exponent of propellant and its change law can bring about a great change of interior ballistic behavior, The new type high-energy propellant whose burning rate pressure exponent is decrescent as pressure increasing can obtain higher interior ballistic piezometric efficiency, and reduce the sensitivity of bore pressure and muzzle velocity on loaded conditions of propellant.

结果表明，发射药燃速压力指数的大小及其随压力的变化规律对内弹道性能有很大的影响，对于燃速压力指数随压力升高而减小的新型高能发射药，可获得较高的内弹道示压效率，降低膛压和弹丸初速对发射药装填条件的敏感性。

The model of mine's trajectory is built,and the model of wallop is built.Then the underwater trajectory of the airdropped mine is simulated by Matlab/Simulink.At last,This paper gets the result of simulation and analysis.

在建立了六自由度的水雷水下弹道数学模型和水雷入水击水力计算的数学模型基础上，通过实例对水雷的水下弹道在Matlab/Simulink环境下进行了仿真计算，最后给出相应的仿真结果和分析。

In the Ming Dynasty published many monographs and monumental works, which, as a component of our traditional military culture and the fruit of the development of firearms technology, are characterized in gunpowder prescription technology including compatibility principles of gunpowder, prescriptions of the firing charge and multi-composition gunpowder, and ballistic hit technology, mainly about scientific design and manufacturing of blunderbusses, the ranges in various angles of depression and elevation, the standards of range and factors which have influence the range.

它作为我国传统军事文化的一个组成部分，火器技术发展的结晶，尤在火药配方技术、弹道命中技术上多独具自己的特色。火药配方技术主要有火药配伍原则、发射火药配方和多成分火药配方；火器弹道命中技术主要有科学设计与制造铳炮、不同俯仰角的射程、射程量度标准及影响射程的因素等。

This paper gives ballistic equation for the suspended projectile under nonstandard conditions, gives parameter correction method for nonstandard trajectory, weather and terrain, establishes a math model for simple and quick solution of firing data, and the paper conducts simulated computation.

给出了悬浮弹非标准条件下的弹道方程组，以及弹道条件、气象条件、地形条件非标准时的有关参数的修正计算方法，建立了一种简单快速求取射击诸元的数学模型并进行了模拟计算。

The initiative shoot condition of the ballistic equation of rocket gun is still general,but on the warship,the ship mov- ing will make the solution of the equation great deviation.

现有的火箭炮弹道微分方程组是建立在静止的发射条件上，舰载火箭炮采用该方程组进行解算时会产生较大的解算误差，为了减小因舰艇运动引起的误差，文中建立了解舰载火箭炮弹道微分方程组对舰艇基本运动和摇摆进行修正的模型。

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。