It was observed that both individuals were at the ICP and there may have been a few more airport personnel there as well. 现场观察结果是在事故指挥部有两位主管人员,也许还有其他一些机场人员在那里。
Some practical testing techniques and desirable observation results have been obtained through investigation and experiment. 通过研究和试验获得了实用的试验技术和理想的观察结果。