究竟两枚氢核如何在室温下聚合，并无详细描述。
Exactly how two hydrogen nuclei could fuse at room temperature has not been elaborated.
岩石孔隙按大小分组后，每一组孔隙的氢核弛豫时间可以用球管孔隙模型计算。
All pores are divided into different groups by their radii, and the relaxation time of each group can be calculated with the sphere-capillary model.
通过傅立叶红外光谱和氢核磁谱（1H NMR）测试表明所合成的丙交酯和乙交酯具有环状结构。
The resulted D, L-lactide and glycolide were found to have ring structure by fourier transform infrared spectrometry and proton nuclear magnetic resonance(1H NMR) spectrometry.
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