After analyzing the inconvenience of instrument calibration in field at present stage, the author comes forward a new calibration method by simulating high, medium, and low rain intensity.
通过分析目前安装在野外使用的翻斗式雨量传感器检定方法的不便，提出了适用野外模拟大、中、小雨强检定的新方法。
The purpose, aim, method and application of the research for mobile network radio signal field intensity prediction software are introduced in this article.
介绍了移动网无线信号场强预测软件研发的目的、目标、方法及其应用。
Firstly, after depicting the singularity of stress field at the top of crack, the finite element method to calculate stress intensity factor of plain fracture problems is founded.
首先，对反射裂缝尖端应力场的奇异性进行了描述，建立了平面断裂问题应力强度因子的有限单元解。
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