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- A circuit that needs to use an echo trap if the circuit is used alone. 一种电路，如果单独使用它，则需要使用回波抑制设备。
- Her performance was cheered to the echo. 她的表演获得长时间的喝采。
- 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。
- His words aroused no echo in their hearts. 他的话未能在他们心中引起共鸣。
- There are two breakers in this circuit. 这个电路里面使用了两个断路器。
- A replaceable printed circuit board. 一种可替换的印制电路板。
- The circuit of the city walls is three miles. 环绕本市城墙的周长是三英里。
- It prevents the other end from hearing an echo of themselves. 该功能可以防止远端听到他们的回声。
- The daily echo have a readership of over ten millions. 《每日回声报》拥有读者逾一千万人。
- Her softening voice chimed in beautifully with the echo of the music. 她柔和的嗓音与乐曲的回声美妙地融为一体。
- There must be a break in the circuit. 电路中一定有断路。
- A short circuit will blow the fuse. 短路会烧断保险丝的。
- A short circuit put the machine out of action. 短路使机器停转。
- The young man is only an echo of his mother's opinions. 那个年轻人只不过是他母亲意见的附和者。
- The Daily Echo has a readership of over ten million. 《每日回声报》拥有读者逾一千万人。
- The return of the echo will elapse longer time. 回声返回所耗的时间越长了。
- The switches close the contacts and complete the circuit. 这些开关可使接触器接通电流形成回路。
- She shouted on the mountaintop and listened for the echo. 她在山顶上大声喊着，然后聆听着回声。
- Don't connect up the two wires, or there will be a short circuit. 不要把这两条电线接在一起，否则会短路的。
- A device used underwater to produce pulses of sound, as for an echo sounder. 声脉冲发送器置于水下产生声脉冲的装置，如回音器中的装置
