曼德·里斯小组仅仅在拔牙方面作了实验，但是他希望五年后这种器械可以投人商业使用。
Mandelis's group has experimented on only extracted teeth, but he expects a commercial device to be available in about five years.
曼德·里斯小组仅仅在拔牙方面作了实验，但是他希望五年后这种器械可以投人商业使用。
Mandelis's group has experimented on only extracted teeth, but he expects a commercial device to be available in about five years.
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