谁有英文专业词汇？谢谢啦！

wangxin

最近在翻译一篇文章，<<THE EFFECT OF LENGTH ON THE ACOUSTIC
ATTENUATION PERFORMANCE OF
CONCENTRIC EXPANSION CHAMBERS>>里面很多词看着就晕，请高手帮忙啦！  The study also provides a simple relation  for the number of repeating attenuation domes prior to the domination of higher order modes in
terms of the l:d ratio of the expansion chamber.这句话怎么翻译？