The technology of sensor is the mainstay of modern information industry . gas sensor as a branch of modern sensors plays a crucial role in many fields such as food industry , atmosphere monitoring , vehicle exhaust and harmful gas detection and other aspects 传感器技术是现代信息产业的支柱,气体传感器作为传感器的重要分支,在现代生活中的应用领域越来越广泛,在食品工业、大气监测、汽车尾气快速实时测定、有毒气体检测、特定火灾现场的气氛监测、安全检查等方面发挥着越来越重要的作用。
4 castables for blast furnace trough has strong resistance to erosion of hotnetal and slag with good thermal shock resistance and low reheating linear change rate , strong anti - oxidation ability , easy for construction and sticky to slag and convenient for repairing and disinantling . no harmful gas formed and beneficial to environmental protection 4 ，高炉出铁浇注料具有：耐铁水和渣的侵蚀，抗冲刷能力强，热震性好，抗氧化能力强，易施工，不粘结渣铁，便于修补和拆除，不产生有害气体，有利环保。
Article 20 any unit that , as a result of an accident or any other exigency , discharges or leaks toxic or harmful gases or radioactive substances , thereby causing or threatening to cause an accident of atmospheric pollution and jeopardize human health , must promptly take emergency measures to prevent and control the atmospheric pollution hazards , make the situation known to such units and inhabitants as are likely to be endangered by the atmospheric pollution hazards , report the situation to the local administrative department of environmental protection and accept its investigation and settlement 第二十条单位因发生事故或者其他突然性事件，排放和泄漏有毒有害气体和放射性物质，造成或者可能造成大气污染事故、危害人体健康的，必须立即采取防治大气污染危害的应急措施，通报可能受到大气污染危害的单位和居民，并报告当地环境保护行政主管部门，接受调查处理。
