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类比法实验探究刚体转动中的“牛顿第二定律”
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类比法实验探究刚体转动中的“牛顿第二定律”
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剩余观看时长：{watchLimitRemaining}
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{activityStartTimeStr}
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{getTaskName}
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{ "i18nChapterName": "章", "i18nUnitName": "节", "i18nLessonName": "课时", "i18nTaskName":"任务" }
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