Recently, we have distin guished the true feicue raw material from false one with a series methods including observ ing, weighing in the hand, illuminating, carving, k...

 
  • 近年来,我们在鉴测过程中,通过看、掂、照、刻、敲、触、烧、测试等一系列方法,来鉴别真假翡翠毛料,同时总结出假翡翠毛料的常见类型、做假的方法,并制定了一套鉴别程序。
今日热词
目录 附录 查词历史