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- Machine has Acryl see-through cover and is contained in a sound reduction room. 机器的外壳是透明的亚克力(树脂)并且放置在一个消音室内。
- Finally, the future of noise active control is proposed, that is design theory and method of sound interdict strap, active sound absorption and research of new absorption material. 最后,提出噪声控制工程的未来发展方向,即:声学禁带设计理论与方法,主动吸声,新型吸声材料的研究。
- Physical Model on Absorbing Sound of Active Sound Absorber 有源消声器消声的物理模型
- A sound mind is inseparable from a sound body. 健全的精神是与健康的身体是不可分割的。
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- Alarmed at the first sound, we hit the dirt. 第一声警报一响我们就迅速卧倒。
- He has told a story which sound not objective. 他讲了听起来不真实的一个故事。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智?
- She was active as a left-winger in the party. 她是党内积极的左翼分子。
- I caught a curious sound in the neighboring room. 我听到隔壁房间里有奇怪的响声。
- I was awakened by the sound of church bells. 我被教堂的钟声吵醒。
- He was very active and rode down several horses. 他劲头很大,一连骑了好几匹马。
- The sound of danger gives wings to his flight. 危险的信号加速了他的逃跑。
- She plays an active part in local politics. 她积极参与地方政治活动。
- I quivered with fear at the sound. 我听见那种声音就吓得发抖。
- The steel market will continue to be active. 钢材市场将会继续保持活跃。
- Her mouth open and shut, but no sound come out. 她的嘴张开又闭上了,没有发出声音。
- An active volcano may erupt at any time. 活火山随时可能喷发。