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Physics, 25.07.2021 21:00, jessicamendozacelis2
Có một hợp kim gồm 60% là nhôm, 40% LÀ MAN GAN khối lượng riêng của nhôm là 2700 kg/m3 có thể coi thể tích hợp kim bằng tổng thể tích các thành phần tính khối lượng riêng của hợp kim , biết tỉ lệ phần trăm tính theo khối lượng
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Có một hợp kim gồm 60% là nhôm, 40% LÀ MAN GAN khối lượng riêng của nhôm là 2700 kg/m3 có thể coi th...
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