observationaladj.根据观察的;监视的
observationn.观察;观察力;注意;评论
observation and examination观察与检查, 观察和检查
Observation of Sedimentation沉降观测
observation of snowy weather雪天观测
observations on Chinese life对中国人的生活的观察报告
observation platform railing了望台栏杆
observation for displacement位移监测
Observation Experiment Target观测试验目标卫星