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例句
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group Ⅱ-Ⅵ compound
group Ⅱ-Ⅵ compound semiconductor
group ⅡA element
group ⅡB compound
group ⅡB element
group Ⅲ-Ⅴ compound
group Ⅲ-Ⅴ compound semiconductor
group ⅢA compound
group ⅢA element
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group ⅡB element
➞
group ⅡB element
Definitions
[1]
[化学]
ⅡＢ族元素
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group ⅡB element