Nhật chế tạo cặp đồng hồ chính xác nhất thế giới
Các nhà khoa học Nhật Bản chế tạo một cặp đồng hồ có độ chính xác cao, chỉ mất một giây trong 16 tỷ năm.
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4bu0xJHhurPDqWThu7TEkeG6t+G6s+G6tcOgxJHhu7Q0w7Vt4bu0NOG6s2Xhu7ThurM64bub4buo4buuL+G7iVbhu67hu4nhu7Q0Yzpra1Phu7Lhu4l4ZTXhu5vhu7JWTOG6szdl4bu04buUxJDhu7Xhu64v4buJVg==