弹道的

It can be used to attack for underwater small scaled divingˉmachine, frogman, mine, ect, and it also can be used to give out soundˉsource for ocean science investig ate.

该小型深弹设计了系统的结构并进行了弹道特性分析计算、水中弹道仿真及相关试验验

Objective To evaluae the clinical use of ureteroscope pneumatic lithotrity on the treatment of ureteral stones.Methods 412patients with stone in ureter were treated with the above mentioned lithotriptor.

目的 探讨输尿管镜气压弹道碎石术治疗输尿管结石的临床疗效方法采用URS取石或配合气压弹道碎石术治疗输尿管结石患者412例。

By analyzing and solving the exterior ballistic equations of shots, the paper gives a method for computing the parabolic trajectory,flying velocity curve and rudimental energy curve of shots.

本文通过分析与求解霰弹子外弹道运动方程，给出计算圆球形霰弹子抛物运动弹道曲线、速度衰减曲线及残留能量曲线的方法。

Parameter of optimized trajectory and variable structure with sliding modes control theorem are used to construct sliding surface, obtain a new tracking trajectory guidance law.

利用基准优化弹道参数和滑模控制思想，构造滑动面，提出了一种新的弹道跟踪制导规律。

Based on conventional ballistics theory,the mathematical model of the ballistic trajectory which adopts low and high pressure chamber fire mode is established for the small cluster tear bomb.

本文针对小型子母式催泪弹，采用经典弹道理论建立了高低压室发射方式的内外弹道数学模型。

The digital model of hel icopter main motor downwash flow and missile dynamics was established. The variation of the missile attitude and traject ory under rotor downˉwash flow are analyzed through simulation, the variety curves of them are provided on both cond itions that with or without the control of autopilot.

通过建立直升机下洗流场数学模型和导弹动力学和运动学模型，对导弹在旋翼干扰流场下的姿态和弹道变化进行了仿真研究，给出了在导弹自动驾驶仪启控或不启控状态下旋翼下洗流干扰对导弹姿态和弹道影响变化曲线。

After the ballistic trajectory in midcourse was simulated, the aspect angles of warhead target were calculated in assumed scene by coordinate transformation.

仿真了空间目标飞行弹道后，通过坐标变换得到设定战情下的弹道目标雷达视线角。

The results show that the rudder angle of torpedo, the battery activation time, and the initial velocity of torpedo all affect the trajectory of torpedo. The rudder angle ought to be set positive when torpedo is launched downwards,or set negative when torpedo is launched upwards to gain perfect trajectory. Meanwhile, shorter battery activation time and higher initial velocity of torpedo are necessary.

结果表明，以上3个参数对鱼雷弹道都有影响，由小深度向大深度发射鱼雷时，横舵管制舵角应设为正值，由大深度向小深度发射鱼雷时，横舵管制舵角应设为负值，并尽量缩短动力电池激活时间，提高鱼雷出管速度，电动力鱼雷管外激活发射可获得较好的弹道。

A multilayer approach to the midcourse trajectory design for a surface-to-air missile to maximize the kill probability was presented.

为了使导弹优化的弹道更有效地杀伤目标，采用多层次法来设计防空导弹中制导段弹道。

The method of ignition transient interior ballistic calculat ion of solid rocket motor was presented. Many factors influencing the performance of interior ballistic such as e rosive burning,friction,pressure velocity were taken into consideration.

探讨了固体火箭发动机点火瞬态一维非定常内弹道模型，综合考虑侵蚀燃烧、加质、摩擦、压力升高速率等因素对内弹道性能的影响，建立控制方程组并采用隐式差分方法结合特征线法求解，应用VC++。

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。