https://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/45313/npden-USTelligent Community 12https://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/45313/npdMon, 09 Dec 2019 09:38:55 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:cfb93b0f-a64a-49b6-86d5-c227512bd8a5Qiang Hehttps://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/45313/npd#commentsCurrent Revision posted to 技术资料库 by Qiang He on 12/9/2019 9:38:55 AM<br /> <p>NPD风谱，又称FROYA &nbsp;风谱，在SACS命名也是采用FROYA风谱 （通过WINSPC 卡选择FROYA 风谱可以设定您的NPD风谱 （见dynamic response手册））。在API RP 2A 21版和 22版规范中都有关于此风谱的计算公式。</p> <p><img src="/resized-image/__size/640x480/__key/communityserver-wikis-components-files/00-00-00-04-10/pastedimage1575884302955v1.png" alt=" " /></p> <p><img src="/resized-image/__size/640x480/__key/communityserver-wikis-components-files/00-00-00-04-10/pastedimage1575884326999v2.png" alt=" " /></p><div style="clear:both;"></div>