observationsn.观察值名词observation的复数形式.observationn.观察；观察力；注意；评论observation adjustment观测平差observation simulation观测值模拟observational evidence观察的证据observational learning观察学习observation equipments观测设备observational variance观测方差observational behavior观测行为observation television观察电视observational adequacy观察合适性Observation Land Plane陆上观察机