除了硅擒纵轮以外还有...

http://www.network54.com/Forum/196053/message/1137889002/A+little+bit+about+the+new+Patek+Philippe+%26quot%3BSpiromax%AE%26quot%3B+hairspring 转自ThePurists

应该今年会发表的新技术,不过说老实话我不喜欢
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