t1/2 decouple Gz 考虑第一个fid: +21.S,cos()-21.S,sin( 8,4-8,s@)→-2L,S,sin(2s4,)cos(-ps(z》+21,S.cos(2g4)sin(-9g(z》 2I2S,cos(2t)cos(-中s(z》-2I,S,sin(2g4)sin(-ps(z》 =-21.S,sin(gt +os(z))-21.S,cos(st +s(z)) ,+2,3sin(Q,f+p:(e》+21,cos(9,4+,(a》 ++→-1cos(24+9,(z)》-￡e61n21,S.sin(2g4+9,(z)川 →+I2cos(2st+p(z)》+6we⊙1n2I,S2sin(24+9s(z)》 +网ttr>-6e61n1sin(2t+中(z》-6,1,c0s(2g4+0(z》 >-￡e6 sin(24+中，(z》+6,l,cos(24+p(z) PEP-HSQC 生物大分子波谱学原理 吴季辉