剩下唯一要做的事就是安装麦克风和扬声器。
The only thing left to do is set up the microphones and speakers.
为了使它们能够开口说话，还给他们装了麦克风和扬声器。
In order to allow them to talk, they are also equipped with a microphone and speakers.
对微麦克风和扬声器的灵敏度和声输出进行了理论计算。
The structural parameters were optimized theoretically, and the sensitivity and output sound pressure of this device were calculated.
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