Wenhua sporting goods factory , covering an area over ten thousand square meters , is a specialized manufacturer of snooker tables , american - style pool tables , pingpong tables , soccer tables , pneumatic tables , basket supports and auxiliary parts incorporating product design , manufacture and sale 广东文华体育用品总部在广州花都区，厂房占地面积一万多平方米，是以设计、生产、销售桌球台、乒乓球台、足球机、风动台、篮球架、健身器械、室外健身路径、及各种儿童乐园游乐设施为主的专业体育用品厂。
At first the form of the turbine blade has been analysed under the theory of aerodynamics and the angle kept tranformation of complex variable function , and thus the analytic formula of pneumatic moment has been deduced . meanwhile the analytic approach to function extremum being employed , the optimal installing angle of the jet has been gained , and the output power as well as the pneumatic efficiency has been analysed 通过空气动力学的理论，采用复变函数的保角变换，从理论上分析了涡轮叶片的形式，导出了风动转距的解析表达式，并采用函数求级值的解析方法，求得了喷嘴的最佳安装角度，分析了风动涡轮的理论输出功率和风动效率。
The pneumatic beating and pulling - out machine , ising under every kind of environment with the term with the troops car , setting up the command post , communication vital point and reinforcing the request to have variously the nail beat into with the main tool that pull out , also can used for the transportation , building etc 风动打拔机，是随部队车在各种环境和条件下，开设指挥所、通讯枢纽以及加固要求以备各类地钉的打入和拔出的主要工具，也可用于交通、建筑等行业。
Wdtf is the manufacturing base for geotechnical drilling tools of cge . its main products are drilling tools for geological and engineering drilling , including wireline drilling tools , pneumatic downhole hammers , downhole drilling motors , synthetic diamond and its products , tungsten carbide and its products , various drilling pipes and tools . all products are reliable in quality , stable in performance and reasonable in price 无锡钻探工具厂为中装集团勘探和工程施工用钻具的生产基地，主要生产各种地质勘探钻进用钻具和工程施工用钻具，包括以绳索取芯工具系列风动潜孔冲击器系列螺杆钻具系列为代表的钻探工具人造金刚石及其制品各种牌号的型号的硬质合金及其制品各种钎杆钎具等。
Landslide is a geological hazard with serious losses . it is very important to research the controling methods . slide - resistant pile , which has many advantages such as high adaptability , little interference to landslide and geological environment , short construction time , high silde resistance , is a main method to control landslide . pneumatic down - the - hole hammer is a drilling method with many advantages . its features , such as wide application range , high hole quality , no circulating medium , low operation regulations , and drilling big diameter rock hole , fit to construct slide - resistant pile . according to the requirement of silde - resistant pile construction , this paper analyses feasibility that pneumatic dth hammer drilling applies to construct slide - resistant pile on the basis of introducing the features of pneumatic dth hammer . then an applied example is given 滑坡是一种危害极大的地质灾害,它的整治方法研究具有重要意义.抗滑桩是一种适应性强、对滑坡稳定性和地质环境干扰小、工期短、抗滑能力强的滑坡整治方法.风动潜孔锤钻进是一种具有许多优点的钻进方法,它的许多特点,如成孔质量高、应用范围广、无液体循环介质、钻进规程参数小、可实现大直径基岩钻孔等都适合于抗滑桩施工.文章在介绍风动潜孔锤钻进特点的基础上,根据抗滑桩施工要求,分析了风动潜孔锤用于抗滑桩施工的可行性,并举出了其应用实例
