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- Echo RSSI signal strength information, and on the protection of mine workers RFID echo ranging system based on the RSSI. RSSI信号回波强度的相关资料，及关于井下工人保护的RFID基于RSSI回波测距系统。
- CERES (Combined Echo Ranging Echo Sounding) 统一的回声测距与测深
- Combined echo ranging echo sounding 组合回声测距与测深
- bottom bounce echo ranging sonar 海底回声测距声纳
- electron-optical echo ranging system 电光回波测距系统
- Maximum Effective Echo Ranging Speed 最大有效回声测定速度
- electro optical echo ranging system 电光回波测距系统
- Ultrasonic Echo Ranging Equipment 超声回波测距设备
- electro-optical echo ranging system 电光回波测距系统-
- Combined Echo Ranging and Echo Sounding 综合回音测距与测深
- I was reading a magazine when the phone rang. 电话铃响时我正在看一本杂志。
- The melody still rang in her ears. 那个旋律仍然在她的耳际荡。
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- The diamond ring dazzled with brilliancy. 这只钻石戒指闪耀夺目。
- Her performance was cheered to the echo. 她的表演获得长时间的喝采。
- Their refusal rang the knell of our hopes. 他们的拒绝是我们希望破灭的凶兆。
- He rang off without giving his name. 他名字也未说就挂断了电话。
- Mysteriously, there was no answer when I rang. 真怪，我按了铃，但没人应。
- The playground rang with children's shouts. 游戏场上到处都是儿童的喊叫声。
- The bird-song is the echo of the morning light back from the earth. 鸟的歌声是曙光从大地反响过去的回声。
