upturned

upturned的英语例句

1. The establishing of UPU plays an active role in promoting the postal communication among countries.

   摘要万国邮联的成立对促进各国间的邮政通讯联系起了积极作用.

2. The paper discussed orientation workspace of 3 UPU parallel manipulators with pure spherical motion and symmetric geometry.

   详细讨论了纯转动型3-UPU并联机构的工作空间.

3. It was called World Post Day in the UPU Congress, held in Tokyo, Japan in 1969.

   在1969年日本东京召开的万国邮政联盟大会上, 将这一天称之为“世界邮政日”.