| 摘要 |
PROBLEM TO BE SOLVED: To provide a mask for aircraft crew equipped with a voice transmission device used in conjunction with a headset.SOLUTION: There is provided a mask for aircraft crew equipped with a voice transmission device used in conjunction with a headset composed of a microphone and a headphone in which the microphone is fixed to the front face of the voice transmission device, and which is provided with a microphone cover for covering the microphone and the voice transmission device together. |
