The paper present the new developments of Ni-W coat, Ni-W-B coat, tungsten composite coat and tungsten brush coat etc.
介绍了镍钨镀层、镍钨硼（磷）镀层、含钨复合镀层和含钨电刷镀镀层等的研究与开发的近期进展。
2
We modify existing W-B signcryption scheme so that it can be used by certified email protocols, and based on the modified scheme we propose a new certified email protocol.
基于修改过的W - B签密方案，该文设计出一种带有离线的、透明可信的第三方认证邮件协议。
3
Theodore and Franklin D. Roosevelt, William Howard Taft, Dwight D. Eisenhower, Lyndon B. Johnson, Gerald Ford, and George H. W. Bush all had offices in this building before becoming president.