如图质量分别为ma和mb的小物块a和b用轻杆连接沿倾角为θ的粗糙斜面下�ab与斜面间的动�擦因数分别为μa和μb则下列说法正确的是 Template




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tomski如图质量分别为ma和mb的小物块a和b用轻杆连接沿倾角为θ的粗糙斜面下�ab与斜面间的动�擦因数分别为μa和μb则下列说法正确的是 coloring