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想請問在分母的9.81 N 是怎麼來的？比重量的公式中的γ＝ρg，g 的單位不是m／sec2嗎。感謝回答
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想請問在分母的9.81 N 是怎麼來的？比重量的公式中的γ＝ρg，g 的單位不是m／sec2嗎。感謝回答
ยังไม่มีคำตอบ
เมื่อดูคำถามนี้แล้ว
ก็จะเจอคำถามเหล่านี้ด้วย😉
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