The technique of superplastic extrusion of lock core with cross-shaped groove are researched in this paper.

对十字槽型锁芯的超塑性挤压技术进行了研究。

youdao

The technique of superplastic extrusion of lock core with cross-shaped groove are researched in this paper.

对十字槽型锁芯的超塑性挤压技术进行了研究。

youdao