Storage or complex accessibility which is utilised completely for statistical purposes. Technological storage or obtain which can be used solely for nameless statistical needs.??ng c? Servo là thi?t b? theo mô hình ?i?n t? ??ng hoá dùng ?? chuy?n ??i n?ng l??ng ?i?n thành n?ng l??ng c? theo m?t góc xoay nh?t ??nh.Trong s? các l?nh v?c thu?c