弹道的

Objective To evaluate the effect of ureteroscope pneumatic lithotrity on treatment of ureteral calculi.

目的探讨输尿管镜气压弹道碎石治疗输尿管结石的效果。方法回顾性分析156例165侧输尿管结石行URSL的临床资料。

Objective To evaluate applicability and therapeutic effects of acute calculi obstructive renal failure with uretropyeloscopy. Methods 21 patients with acute calculi obstructive renal failure were treated by ballistic lithotrity under ureteropyeloscopy and indwelled with double-J catheters.

目的 探讨输尿管镜在处理因结石梗阻引起肾衰时的应用和疗效方法对21例输尿管结石19例（其中上段4例，中下段15例，肾盂内发性结石并出口梗阻3例）出现梗阻性肾衰的患者实施输尿管气压弹道碎石术及留置双J管治疗。

In order to adapt the demand of the future war,the mondial ballisticians are making great efforts to increase the initial velocity of the gun to antagonize the future high performance flying target and armored target.

为适应未来战争的需要，世界各国弹道学家都在努力提高火炮弹丸的初速，以对付未来高性能飞行目标和装甲目标。

The composition and the principle of millimeter wave remotely controlled trajectory correction munition system are researched.

讨论了毫米波遥控指令弹道修正弹系统的组成和工作原理；分析了远程低成本精确火力打击和防空反导2种模式下，对该系统在作用距离、修正能力等方面的性能要求。

The conception of carrier-based double-purpose MMW remote controlling trajectory correction munition is put forward and the system structure is given.

分析了舰载火炮武器作战任务的发展方向，提出了双用途舰载毫米波遥控指令弹道修正弹系统的概念，并给出了系统结构。

The Barrel life of Cannon is assessed by the rate of the muzzle velocity of pill to the standard velocity.

通过用火炮外弹道测量的初速与标准初速的比率来评定火炮身管寿命。

A relatively short cannon that delivers shells at a medium muzzle velocity, usually by a high trajectory.

榴弹炮一种相对较短的大炮，通常以较高的弹道和中等初速度发射炮弹

Established the aircraft mathematical model of space motion, application, Newton interpolation polynomial method on the aerodynamic parameters identification, use of C language compiled simulation program, and to out the simulation results and analysis.

详细说明：对某飞行器的全空域飞行弹道进行了仿真研究。建立了飞行器空间运动的数学模型，应用"牛顿插值多项式法"对气动力参数进行了辨识，用C语言编制了仿真程序，并给出了仿真结果及分析。

The trajectory, or path, of a projectile is subject to the forces of gravity, drag, and lift.

外弹道学是研究射弹的飞行，弹道是射弹在重力、拖曳力和升力作用下的飞行路线。

Besides, we study the spin precession in one-dimensional ballistic system with three different forms of spin-orbit coupling.

此外， 我们研究了在三种不同形式的自旋轨道耦合下一维弹道系统中的自旋进动。

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。