Methods 112 patients with ureteral calculi underwent pneumatic lithotripsy by rigid ureteroscopy in our hospital.
方法输尿管镜下气压弹道碎石术治疗输尿管结石112例。
Methods Ureteroscopic pneumatic lithotripsy was used in 32 cases with acute renal failure caused by calculi obstruction of bilateral upper urinary.
方法采用输尿管镜腔内气压弹道碎石术治疗由输尿管结石梗阻导致急性肾功能衰竭32例。
Methods: 415 cases of ureteral calculi were treated with ureteroscopic pneumatic lithotripsy.
方法：对415例输尿管结石采取输尿管镜气压弹道碎石术。
Then listed some possible methods which enhance the movement frequency of a ready-made pneumatic cylinder used in the practice, and put forward the concept for most effective methods.
由此列出了提高用于实践中现成气缸的运动频率的一些可能方法，并提出了最有效方法的概念。
Numerical simulation using the methods of characteristics in a horizonal pipeline, the pressure drop in inclined pipeline, and the long distance plug-flow pneumatic conveying are reviewed.
此外评述了用特征线方法进行水平管的数值模拟，倾斜管的压力降计算和长距离的栓流气力输送。
The working principle and characteristics of the pneumatic test rig by applying the three kinds of control methods were introduced respectively.
文中详细介绍了采用三种控制方式的气动实验台的工作原理及其特点。
Methods: 52cases of ureteral calculus were treated with ureteroscopic pneumatic lithotripsy combined with ESWL.
方法：采用气压弹道碎石联合ESWL治疗输尿管结石52例。
Methods A retrospective analysis was made to the clinical data of 86 cases with upper ureteral calculi treated with ureteroscopic pneumatic lithotripter.
方法回顾性分析经输尿管镜气压弹道碎石术治疗输尿管上段结石86例的临床资料。
Abstact:This article mainly introduced the improvement of DB420 pressing device of multi_function packaing machines and the regarding control methods of the pneumatic system and the electrical route.
本文主要介绍了DB420多功能包装机压印装置机械部分的改进及相应的气动、电路控制方法。
This article mainly introduced the improvement of DQ325 pressing device of multi function packing machines and the regarding control methods of the pneumatic system and the electrical route.
主要介绍了DQ32 5多功能包装机压印装置的改进及相应的气动、电路控制方法。
In this article, we introduce common problems, analyze their causes and put forward servicing methods of pneumatic tube system.
介绍气动物流传输系统常见的故障并分析了故障原因，提出解决方法。
Function and principle of the pneumatic control of plane refueller had been related simply. Methods of removing gas circuit troubles had been recommended.
简述了飞机加油车气控功能及原理，介绍了气路系统故障的排除方法。
In the landslide and slope management, anchoring drilling methods used mainly Rotary-drilling or one-way Pneumatic DTH for drilling.
在滑坡及边坡治理中，锚固孔成孔方法主要采用回转钻进或单向潜孔锤进行钻进。
Methods Between December 1998 and December 2001,186 patient with stone in the ureter were treated with Swiss lithoclast pneumatic lithotriptor in the ureteroscope management.
方法采用输尿管镜下气压弹道碎石术治疗输尿管结石186例。
Based on a comparison of various current flatness measurement methods, this paper proposes to utilize pneumatic measurement in the flatness measurement system for the brakes 'steel back.
文中详细分析了气动测量原理，比较了各种气动测量气路的优劣，确定了差压式测量气路。
Based on a comparison of various current flatness measurement methods, this paper proposes to utilize pneumatic measurement in the flatness measurement system for the brakes 'steel back.
文中详细分析了气动测量原理，比较了各种气动测量气路的优劣，确定了差压式测量气路。
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