Physics, 11.12.2021 04:20 sierram298

Để quan sát các phần che khuất của răng, các nha sĩ thường dùng một dụng cụ hình tròn bằng kim loại. Theo em đó là loại gường gì? Vì sao?

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Để quan sát các phần che khuất của răng, các nha sĩ thường dùng một dụng cụ hình tròn bằng kim loại....

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