护耳;
英文例句/中文翻译:
a new type of active noise cancellation earmuffs. the research of active noise cancellation in headphone with feedback mode
基于飞行保护头盔的主动消声研究反馈式主动消噪耳机的研制
If blind people wear sunglasses, why don't deaf people wear earmuffs?
盲人都戴墨镜,聋人干嘛不戴上耳罩?
The design of an adaptive earmuffs for artilleryman
炮兵自适应护耳器的设计