simultaneous observation
短语词组
- simultaneous A observation 同步觀測
- simultaneous U observation 同步觀測
- simultaneous E observation 同步觀測
- simultaneous meteor radar observation 隕星同時雷達觀測
- simultaneous observation loop 同步觀測環;同步環
- non -simultaneous observation 異時觀測 返回 simultaneous observation