| 1. | Invest in a telephone headset for your office phone
在你办公室的电话机旁安装一个头戴式耳机。 |
| 2. | 4 . each circuit can support 50 receiving units
1 .配头戴式耳机 |
| 3. | Headphones are supplied in case the voice synthesizer is used
如采用文字转换语音系统时，会提供头戴式耳机给用户使用。 |
| 4. | H . p headphone
头戴式耳机 |
| 5. | Hs head set
头戴式耳机 |
| 6. | Wearing headphones for just an hour will increase the bacteria in your ears by 700 times
头戴式耳机仅仅1小时就会使耳朵中的细菌数量增加700倍。 |
| 7. | High fidelity audio equipment and systems ; minimum performance requirements . part 10 : headphones
高保真音响设备和系统.最低性能要求.第10部分:头戴式耳机 |
| 8. | They say large earphones that cover the whole ear are probably safer than the smaller earbuds that come with most music players
他们说能盖住整个耳朵的大型头戴式耳机比随机附带的小插入式耳机更安全。 |
| 9. | They say large earphones that cover the whole ear are probably safer than the smaller earbuds that come with most music players
他们说大的能盖住整个耳朵的头戴式耳机就比很多随音乐播放器送的小耳塞要更安全。 |
| 10. | The group says the best way to protect your hearing is to reduce the volume , limit listening time and using earphones that block out foreign noises
此组织说，保护听力的最佳方法，就是降低音量，减少听的时间，以及使用头戴式耳机来隔绝外部噪音。 |
