Minh cung dang chay may sac ky khi, ban co kinh nghiem ji thi cho minh biet. Cho minh hoi la dat cac thong so truoc roi moi bom mau vao phai ko, truoc khi tat may co phai cho` cho may nguoi khong va co phai lam sach khi phan tich khoi cot ko, qua trinh do thuc hien the nao, thuong dat toc do dong cua may sac ky khi la bao nhieu? Thanks
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