This article first elaborates the work principle of the traditional earth magnetism vehicles detector,analyzes three kinds of situations which it unusually triggers.
论述了传统地磁车辆检测器的工作原理,分析了其非正常触发的3种情况。
Concentration field of hydrogen sulfide on ground while releasing wa s computed by diffusion model of abnormal emission.
以有毒重气硫化氢气体为对象,利用非正常排放扩散模型计算气体泄漏时地表扩散浓度场,对比研究两种极端大气稳定度条件下浓度场分布规律和特征,确定了各自情况下的安全距离。