共查询到20条相似文献,搜索用时 375 毫秒
1.
Gin-ya 《中国稀土学报(英文版)》2010,28(6):843-846
The research trend in rare earths has been studied using the Chemical Abstracts (CA) data.The number of papers published from China has been increasing very rapidly since 2001 and today China is the top country in terms of paper contribution on rare earths.This article presents a comparative study of R & D trends among China,Japan and USA. 相似文献
2.
3.
5.
8.
10.
16.
《天津冶金》2009,(4):81-84
Cause Analysis and Preventive Measures for Inclusion Formation in Aluminized Steel
Wang Baoming, Wang Wenhui, Hu Guangwen, Deng Zhiyong
Abstract: Through tracking and analysis on the source of inclusion in aluminum steel, it is determined that A1203 is the source of inclusion, which congregates in the mould and is carfled into the billet. Processes of LF wire feeding and calcium treatment are optimized and relevant measures are taken to settle the existing problems. The billet quality is improved and inclusion kept within the standard. 相似文献
Wang Baoming, Wang Wenhui, Hu Guangwen, Deng Zhiyong
Abstract: Through tracking and analysis on the source of inclusion in aluminum steel, it is determined that A1203 is the source of inclusion, which congregates in the mould and is carfled into the billet. Processes of LF wire feeding and calcium treatment are optimized and relevant measures are taken to settle the existing problems. The billet quality is improved and inclusion kept within the standard. 相似文献
18.