trong m?t kho?n th?i gian nh?t ??nh tr??c khi ?i?u ch?nh, t?t nh?t b?n nên dùng ph??ng pháp t? ??ng ho?c xây d?ng hàm ?? ki?m tra v?i d? li?u.The hardest faults to find are those that materialize only once in a while-intermittent celebration. They are often caused by poor connections, dust, Grime, corrosion, or simply broken wiring or connec