Now I'll put a cannula over your nose.
现在我会在你鼻子装上鼻导管。
When the procedure is complete, the electrode and cannula are removed.
手术完成后，取出电极和套管。
A cutting cannula then rotates quickly over the needle to obtain the tissue sample.
切割套管然后迅速转动穿刺针获取组织样本。
A cutting cannula then rotates quickly over the needle to obtain the tissue sample.
切割套管然后迅速转动穿刺针获取组织样本。
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