It mainly consists of sensor arrays and pattern recognition systems. 主要由传感器阵列和模式识别系统组成。
Although some other gas sensor array systems have been tested at the prototype stage, few have been used in real time measurement situations. 尽管一些其他气体传感器阵列系统在原型阶段经过了测试，但在实时测量情况下却很少被使用。
