The spin-lattice relaxation time ( T1) range and nuclear overhauser enhancement ( NOE) factor were measured with PRFT and inverse gated decoupling technology. 利用PRFT和反门控去偶技术测定了有关碳原子的自旋晶格弛豫时间(T~1)范围和NOE因子;
FTIR and inverse gated decoupling()~ ( 13) C-NMR were used to characterize the main sequential structures in a blend of ethylene-propylene copolymer and polystyrene. 用红外光谱和反转门控13C-NMR谱表征了乙丙共聚物-聚苯乙烯共混物中两组分的主要序列结构。