BQ GIAO DUC VA E>AO T�O G D�I HOC SU PH�M KY THU! T �003 TS NGUYE� NGQC THICH CN DO HOANG (LUIJ nAND N()I B()) TP,HCM2005 f BQ GIAO I>(,JC v A DAO T�0 TRUONG D�I HQC SU PH�M KY THU�T roO� TS NGUYE� NGOC THICH CN.DO HOANG Irll«Jl-\ B>l-\K ClfJdl\fG 'J (I�t!tJ IIANII Nt)l Dt)) Tt• IICM 2005 '-, ' ·''�, A� ? A CHu'dNG I : CAU T�O NGUYEN TU 1.1 CAC CAU TU CHiNH CUA NGUYEN TU: Vao cuoi the' ky 19, bang thi nghi�m ph6ng dit nhan mang dit nguyen ttl' X, nguoi ta dung m(>t t�p ht nguyen tlt trung hoa di