The batteries commonly used in today's mobile phones and laptops still use cobalt oxide as the positive electrode.
如今在移动电话和笔记本电脑中使用的电池通常都是用钴氧化物作为正极。
Existing versions of this electrode are small enough to fit into a mobile phone and Mr Yang claims they will soon be shrunk to the size of a thumbnail, enabling people to wear them without noticing.
现有版本的电极已经小到可以植入手机中，Yang先生宣称它们很快会被缩小到拇指甲大小，使人们携带在身上却不被他人注意。
Existing versions of this electrode are small enough to fit into a mobile phone and Mr Yang claims they will soon be shrunk to the size of a thumbnail, enabling people to wear them without noticing.
现有版本的电极已经小到可以植入手机中，Yang先生宣称它们很快会被缩小到拇指甲大小，使人们携带在身上却不被他人注意。
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