The numerical simulation of wind field for transmission towers based on finite volume method;
基于有限体积法的输电杆塔风场数值模拟
Concerning the technical development and market of transmission tower steel structures, the current status of steel use, problems exited and development trend of transmission tower in China are discussed.
从输电杆塔钢结构技术发展与市场方面,论述了当前我国输电杆塔的用钢现状、存在的问题和发展趋势,指出随着电网建设的不断发展,输电杆塔对钢材的品种和规格将提出更多的要求,塔材材质方面将向高强度环保型、节约型方向发展,输电杆塔对优质高强的钢材需求量巨大。
Complex-modal analysis method is used to solve the linear partial differential equation governing axial vibration of transmission tower pile foundation.
用复模态方法求解了输电杆塔基桩轴向振动的线性偏微分方程。
Research on the Drill Pipe Transportation Manipulator of Horizontal Directional Driller and the Control System
水平定向钻机钻杆输送机械手及控制系统研究
disappearing finger auger
偏心扒杆式输送螺旋
Smart Power Drilling Technology on Drilling Power and Signal Transmission Drillpipe
基于动力及信号传输钻杆平台的智能化动力钻井技术
Density Logging Job in Horizontal Well During the Drill-pipe Conveyed Logging
钻杆传输水平井密度测井施工工艺探讨
Study on Driving Power Consumption of Solid Conveying and Melting Process in Conical Twin-Screw Extruder;
锥形双螺杆挤出机固体输送段和熔融段物料输送功率消耗的研究
There are net carried bect and roll chain to be choosen in carrier part.
输送部分有网状带和杆状链两种可供选择。
Converter Pitch Processing Problems in Transmitting Cylinder Container;
输送圆柱形容器的变螺距螺杆加工问题探讨
The Life of Screw Pump Stator Used in Pumping Emulsion Explosive
乳化炸药基质输送螺杆泵定子寿命研究
Numerical Simulation of Power Consumption Characteristics in Conveying Element in Triple Screw Extruder
三螺杆挤压机熔体输送段功耗特性的数值分析
Improvement and Applications of Horizontal Well Logging Technology With Pipe Convey in Puguang Gas Field
普光气田水平井钻杆传输测井技术的改进及应用
Research on Pneumatic Conveying Technology in the Process of Trenchless Drilling of City Planning Roads;
非开挖市政道路施工钻孔工艺过程中泥屑气力输送技术的研究
The Research on the Method of Pneumatic Conveying Dry Smear Mud for Non-Trenching Drilling of City Planning Roads Construction;
非开挖市政道路施工钻孔泥屑气力输送方法的研究
great lengths of drill pipe which are rotated by an engine at the top,
钻杆顶部安装的发动机带动钻杆旋转，
As the piston descended, a ratchet engaged the piston rod and engine shaft and thus power was transmitted.
当活塞下行时，棘轮连接活塞杆和发动机轴，因此将功率输送出去。
The Possibility of Using Archimedean Channel for Conveying Melting Polymers
用端面阿基米德螺槽代替螺杆输送熔融塑料的可行性估计
The results obtained show that it is possible to use the Archimedean channel instead of screws for conveying melting polymers.
结果肯定了用端面阿基米德螺槽代替螺杆输送熔融塑料的可行性。
Study on Properties of Mixing Elements in Melt Conveying Zone of Intermeshing Counter-Rotating Twin Screw Extruder;
啮合异向双螺杆挤出机熔体输送段混合元件性能的研究
Study on Influence of Flight Configuration of Injection Screw to Melt Conveying Performance in Metering Zone;
注射螺杆螺棱结构对计量段物料输送性能的研究