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This kind of structural unit is called the chain link.
这种结构单元被称为链节。
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(physics and chemistry) the simplest structural unit of an element or compound.
(物理和化学)元素或化合物最简单的结构单位。
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(physics and chemistry) the simplest structural unit of an element or compound.
(物理和化学)元素或化合物最简单的结构单位。
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