... 壳冠 shell crown 壳状牙 shell tooth 可动牙科治疗台 mobile dental cart unit ...
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tooth shell [无脊椎] 齿贝
saw-tooth thin shell 锯齿形薄壳
tooth-shape cover shell 齿形罩壳
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The rest of the shell is then rolled towards the tooth in an anticlockwise direction, in order to remove it.
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