论文部分内容阅读
用于风网保护系统的蝶形止回阀
【机 构】
：
唐山天胜自控技术研究所
【出 处】
：
第四届全国阀门与管道学术会议
【发表日期】
：
1994年期
其他文献
【Abstract】Micro film is a product of the development of Network Media， which is different from the traditional film performance， and in order to cater to the characteristics of micro era， it is more a
本文通过对中线衬胶蝶阀优缺点的简短分析，从蝶阀的流量与流阻系数、对腐蚀介质的适应性和控制水平三个方面讨论了小口径中线衬胶蝶阀进一步开发的必要性及开发的基本构想。从
1. The Comparison of Pride And Prejudice’s and Mrs. Dalloway’s Backgrounds Jane Austen （1775-1817） was emphatically not a feminist； or we can say that she herself didn’t have the profound understandi
期刊
【Abstract】The Great Gatsby is a significant classic in American literature. The Great Gatsby tells the love story between young Gatsby and rich Daisy. From the moment they loved each other， they cheri
【Abstract】This thesis ， based on the theories of womanism， and from the harmony of the two sexes， gives a deep and thoroughly discussion about black women’s constant pursuit of self-identity and emanc
【Abstract】Transcendentalism was a philosophical， literary， social and theoretical movement that flourished in New England from about 1836 to 1860. Ralph Waldo Emerson was the most distinguished New En