simultaneous observation
短語詞組
- 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(dá)觀測
- simultaneous observation loop 同步觀測環(huán);同步環(huán)
- non -simultaneous observation 異時觀測 返回 simultaneous observation