基本: basic; fundamental观察时间: observing time; viewing time观察时间: hour of observation; observation time; observing time; viewing duration; viewing time观察时间差: observed time difference观察时间差测量: otd最大可用观察时间: maximum usable viewing time观察时数据: recent data观察时有雨: recent rain样本观察值: sample observation基本观测站: key station基本观点: philosophy基本观念: concept觉察时间: detection time; perception time侦察时间: reconnaissance time观察时有细雨: recent drizzle观察时有细雨近时毛毛雨: recent drizzle第三世界的基本观点: third world radical view基本时间: basic time基本时间戳: basic term stamp观察终止时间: end time of observation成本观: cost concept基本动作时间: bmt basic motion time; element time基本生产时间: basic time of production基本时间标准: primary time standard基本时间研究: elementary time study
