板振动对微穿孔板吸声体的 声学 特性存在一定的影响.The panel resonance always affects the absorption characteristics of microperforated - panel ( MPP ) absorber.试验表明,微穿孔板吸声结构可有效地降低排气噪声.Results show that the acoustic system of micro perforation p...
I tried to emphasize my good points without sounding boastful.我在强调自己的优点时尽量不让人觉得是在自我吹嘘。The story was used to emphasize the humanity of Jesus.人们用这个故事来强调耶稣人性的一面。Economists emphasize measurable quantities — the number of job...
The present Marcus Wallenberg is driving the latest modernisation.现在这位马库斯?瓦伦堡正在引领最新的现代化.Talk of modernisation has not removed basic disagreements.现代化并不能解决其根本的意见分歧.This influx brought modernisation and new technology, and...