令牌环连接TRC ？
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 ring finger of the left hand has a direct connection with the heart.
这枚戒指的左手手指有着直接的联系。
This ring finger of the left hand has a direct connection with the heart.
这枚戒指的左手手指有着直接的联系。
应用推荐