短語(yǔ)詞組短語(yǔ)simultaneous A observation 同步觀測(cè)simultaneous U observation 同步觀測(cè)simultaneous E observation 同步觀測(cè)simultaneous meteor radar observation 隕星同時(shí)雷達(dá)觀測(cè)simultaneous observation loop 同步觀測(cè)環(huán);同步環(huán)non -simultaneous observation 異時(shí)觀測(cè) 返回 simultaneous observation