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质子带正电荷
例句
DEFINITIVE EXAMPLES 权威例句
〔charge〕
The proton has positive electrical charge.
质子带正电荷
。
麦克米伦高阶
A proton has positive charge and an electron has negative charge.
质子带正电荷
,电子带负电荷。
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更新时间:2026/7/8 17:59:51