英汉
汉语
更多
The noise-reducing effects of the cotton-yarn earplugs was evaluated by comparing the hearing threshold value of ear before and after the earplug wearing among 30 noise-free workers.
英
美
释义
本文以非噪声作业青年30名为受试者,佩戴棉纱耳塞,用真耳阈值法作60耳的棉纱耳塞隔声值评价。
以上内容独家创作,受著作权保护,侵权必究
海词词典,十七年品牌
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载
立即下载