E 1289 – 97 R03 ;RTEYODK_.pdf
(2008-07-13 20:38:17, Size: 88 KB, Downloads: 0)
ASTM E1289-97(2003) 声传输损耗的基准试样
字体: 小 中 大 | 打印 发表于: 2008-7-13 20:38 作者: 鸡爪青椒 来源: 万客化工在线
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