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壓強公式P=ρgh適用於密度均勻的柱體形狀物體【只對形狀有要求,對物質的狀態沒有要求】. 注意【h】的資料獲取是從上部表面向下到製定部位的豎直高度(深度)! 常數g一般是9.8N/kg;問題注明時取10N/kg.
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