|
关注:1
2013-05-23 12:21
求翻译:Which of the following test frequencies would generally provide the best penetration in a 30cm (12 in.) thick specimen of coarse-grained steel?是什么意思?![]() ![]() Which of the following test frequencies would generally provide the best penetration in a 30cm (12 in.) thick specimen of coarse-grained steel?
问题补充: |
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区