Pick up a paper gentle, civilized habit has been formed.
俯身捡起一张纸，文明习惯已开始。
A new technology of cold-formed pipe connection-ring connection is introduced in this paper.
介绍了一种新型的冷挤压管道连接技术—环连接。
This paper formed part of the author's Ph. D. thesis.
本文是作者博士论文的一部分。
This paper formed part of the author's Ph. D. thesis.
本文是作者博士论文的一部分。
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