earmuff信息详情
n.御寒耳罩
bat fowling shakespeare definition───捕蝙蝠莎士比亚的定义
melts my heart in spanish───用西班牙语融化我的心
wear with it───穿上它
hearty meal───饱餐一顿；丰盛的饭菜
spears 5e───长矛5e
turkey earthquake rescue───土耳其地震救援
dearly bethany───亲爱的贝萨尼
anticipated earnings───预期收益
Neolitgardelearn to read───学习阅读
beaches near newport news va───弗吉尼亚州纽波特纽斯附近的海滩
noise can be better attenuated so as to obtain good attenuation characteristics over the entire audible frequency range by using active noise reduction technique in the closed-air type earmuff.───密闭型耳罩中，利用有源降噪技术可以较好地衰减低频噪声以使整个可听声频率范围内获得良好的衰减特性。
optimum design of the controller of compound active noise cancellation earmuff is discussed.───探讨了复合式有源消声耳罩的控制器的优化设计方法。
Noise is another hazard. Working with noisy tools such as jackhammers requires proper, effective use of hearing protection. Ear plugs and earmuff type hearing protection is recommended.───噪音是另一种危险。使用手提钻之类的噪音工具时，必须佩戴有效的听力保护装置。建议使用耳塞和耳罩听力保护装置。
Test and Study of the Phase Characteristics in the Electro-acoustic Translation of Active Noise Cancellation Earmuff───有源消声耳罩电声转换相位特性的测试研究