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Objective:To observe clinical effect and complications of treating ureterolith through aerodynamic trajectory lithotrity by ureterorenoscope(URS). 目的 :观察经输尿管肾镜行气压弹道碎石治疗输尿管结石的临床疗效及并发症。
The treatment of ureterolith through aerodynamic trajectory lithotrity by URS has such advantages as high cure rate and safety,minimal invasiveness,reduced complications and low expense,etc. It may serve as a choice of method to treat ureterolith. 经输尿管肾镜行气压弹道碎石治疗输尿管结石具有治愈率高、安全、微创并发症少、费用低等优点 ,是治疗输尿管结石的首选方法
Methods:128 cases were treated by aerodynamic trajectory lithotrity with the URS including 10 cases of calculus in upper part,46 cases in middle part,and 72 cases in lower part of ureter. 方法:经尿道输尿管肾镜直视下,行气压弹道碎石术治疗输尿管结石128例,其中输尿管上段结石10例,中段结石46例,下段结石72例。
The missile deflected from its trajectory. 导弹已偏离轨道。
aerodynamic trajectory 气动弹道
In the sensitivity analysis of the trajectory were considered the sensitivities to variations of aerodynamic models, release parameters, control commands and to gusts. 灵敏度分析则包括飞行终端状态参数受模型变化、投放条件、操纵参数、风场等内外扰动影响的分析。
The article introduces a method about setting up a model of plane trajectory aerodynamic coefficient on reentry segment. 因而,将空气动力系数看作常量,会造成较大计算误差。
My career seemed to be on a downward trajectory. 我的事业似乎在走下坡路。
Historical trajectory and path dependency. 历史轨迹与路经依赖。
The importance of VV &A (Verification, Validation & Accreditation) was discussed. Several basic principles of VV &A of aerodynamic missile trajectory simulation were put forward. 论述了仿真VV &A的重要意义,提出了飞航导弹弹道仿真VV &A的几条基本原则。
To place into an orbit, a trajectory, or a stream. 置于放入一个轨道、弹道或潮流中
The emphasis was on new aerodynamic parts. 重点是新的空气动套件。
Aerodynamic dual-radius multi-dimple pattern design minimizes drag, prolongs lift and extends flying distance with a middle and favorite straight trajectory. 正确速度下;在球侧印制的箭头标记能增加直行推杆及结果一致性.
The newspaperman summarized the crux of the aerodynamic phenomenon. 记者总结了空气动力现象之谜。
The path followed by a projectile is called its trajectory. 发射体所循的路径称为它的轨道。
The median line in the trajectory of fire of an artillery piece. 中线一门大炮开火的轨迹中线。
It is not difficult to sketch the subsequent trajectory. 很容易描绘出它们后来的轨迹。
The particle trajectory is calculated with certain amoune of selected control rules by establishing mathematical mod els such as whole missile mass calculation model,aerodynamic estimation model and turbojet engine performance interpolation. 通过建立全弹质量计算模型、气动估算模型和涡喷发动机性能插算等数学模型 ;选取一定的控制规律进行了质点弹道计算 .
In this paper, the optimization problem of reentry trajectory and aerodynamic heating history of the space shuttle has been discussed using the modern control theory by selecting the attack angle and the bank angle as control variables. 本文应用现代控制理论研究了航天飞行器三维最优再入轨道和与轨道参数密切相关的气动加热过程。
This method can measure the object trajectory and its aerodynamic forces in the complex flow field accurately and predicted the compalibility bctween the pilotless aircraft and the parent airplane. 该方法能较精确地获得外挂物在复杂干扰流场中所受的空气动力和力矩，实时地提供离机后的轨迹和姿态，预测了无人机和母机之间飞行是否相容的问题。