从已灭绝的复活节岛棕榈坚果的考古发现中可以看到由波利尼西亚老鼠的牙齿形成的小凹槽。
Archaeological finds of nuts from the extinct Easter Island palm show tiny grooves, made by the teeth of Polynesian rats.
凹槽-晶圆片边缘上用于晶向定位的小凹槽。
Notch hAn indent on the edge of a wafer used for orientation purposes.
凹槽-晶圆片边缘上用于晶向定位的小凹槽。
Notch - An indent on the edge of a wafer used for orientation purposes.
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