... fishing technology 捕鱼技术 satellites and sonar 卫星和声纳 a higher proportion 更大的比例 ...
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今天的船只可以利用卫星和声纳来寻找猎物，而这在50年前是不可能的。
Today's vessels can find their prey using satellites and sonar, which were not available 50 years ago.
跳频技术具有很强的抗干扰能力和组网灵活等优点，在军事无线通信、民用移动通信、卫星通信、现代雷达和声纳等电子系统中有重要应用。
Frequency hopping has the advantage of anti-jamming and the flexible of networks, it is important applications of military communication, mobile communication, modern radar and sonar.
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