从烃与水的T1差异着手，针对双极化时间核磁共振测井，可以建立含烃饱和度方程。
Hydrocarbon saturation equation was set up according to T1 difference between hydrocarbon and water in dual polarization time NMR log.
应用结果表明，核磁共振双tw观测方式及其分析方法是行之有效的，可作为直接发现油气层的一种有效方法。
Application shows that NMR dual-TW observation method and the analytical method are feasible and can be used to effectively and directly detect oil and gas.
利用红外光谱及核磁共振法表征了双烷基聚醚的端基结构。
Structure characterization and film morphology of polyether/UV-absorbing groups containing polysiloxane;
合成三种N，N＇-1，4-亚丁基双螺吡喃和双螺恶嗪光致变色化合物，通过红外光谱、核磁共振氢谱及元素分析确证其结构。
Three photochromic N, N'-1,4-tetramethylene bisspiropyran and bisspirooxazine compounds were synthesized. They have been identified by IR spectra, 1H -NMR spectra and elemental analysis;
目的：基于双侧头颈部软组织病变的临床不典型性，旨在探讨核磁共振(magnetic resonanceimaging,MRI)对其进行鉴别诊断的影像学依据。
Objective: To investigate the value of magnetic resonance imaging (MRI) in diagnosis of soft tissue lesions of bilateral head and neck region.
目的：基于双侧头颈部软组织病变的临床不典型性，旨在探讨核磁共振(magnetic resonanceimaging,MRI)对其进行鉴别诊断的影像学依据。
Objective: To investigate the value of magnetic resonance imaging (MRI) in diagnosis of soft tissue lesions of bilateral head and neck region.
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