For it is difficult to get the carbon-hydrogen ratio of gasoline during themeasuring of petrol fuel consumption with carbon balance method, according to therelationship between carbon-hydrogen ratio and gasoline density, a simple mathematicalmodel is derived as a new method for the measuring of gasoline carbon-hydrogen ratio inpractice.
鉴于用碳平衡法测量汽油机耗油量时汽油碳氢质量比难以测定，根据汽油碳氢质量比与汽油密度的对应关系，导出了汽油碳氢质量比与密度关系的简单数学模型，为汽油碳氢质量比的测定提供了一种新的方法。
Study of proton magnetic resonance spectroscopy in normal human brain;
正常人脑氢质子磁共振波谱的研究
Comparative Study of Metabolism of Brain Glioma and Meningioma with Two-Dimensional Multivoxel Proton Magnetic Resonance Spectroscopy;
脑胶质瘤和脑膜瘤的二维多体素氢质子磁共振波谱
Analysis of 2D Multivoxel Proton Magnetic Resonance Spectroscopy in Subcortical Arterioscleratic Encephalopathy;
目的运用多体素二维氢质子磁共振波谱法(1H-MRS)分析皮层下动脉硬化性脑病(BD)梗死灶和缺血灶代谢产物的代谢特征和变化规律。
The Study of Clinical Applications of ～1H-MRS in Brain Gliomas;
脑胶质瘤氢质子磁共振波谱的临床应用研究
Two Dimensional Proton MR Spectroscopy in Brain Gliomas;
脑胶质瘤的二维氢质子磁共振波谱研究
The Clinical Application of Hydrogen Proton Magnetic Resonance Spectroscopy in Cerebral Gliomas
氢质子磁共振波谱在颅内胶质瘤中的临床应用
Evaluation of Migraine by Proton Magnetic Resonance Spectroscopy and Perfusion Weighted Imaging;
偏头痛氢质子磁共振波谱及脑血流灌注研究
The Study of ～1H Magnetic Resonance Spectroscopy in Parkinson Disease;
氢质子磁共振波谱在帕金森病中的应用研究
The Applied Research of MR Spectroscopy in Prostate Cancer;
磁共振氢质子波谱在前列腺癌的应用研究
Preliminary Evaluation of Proton Magnetic Resonance Spectroscopy in Soft Tissue Tumors;
软组织肿瘤的磁共振氢质子波谱应用价值研究
A substance capable of yielding hydrogen ions.
氢离子供体一种可放出氢离子的物质
Calculation on the Confined Atoms and Molecules;
二维受限氢原子与氢分子离子性质研究
The mass of an electron is 1/1850 that of a hydrogen atom.
电子的质量是氢原子质量的1850分之一。
A proton or a neutron has about the same mass as a hydrogen atom.
质子或中子的质量和氢原子的质量大致相同。
The interaction between soliton pairs and impurities in hydrogen bonded systems
氢键系统中孤子偶与杂质的相互作用
Hydrogenic-Donor Impurity States in Coupled Quantum Disks in the Presence of a Magnetic Field;
磁场对耦合双量子盘中类氢杂质性质的影响
A catalytic electrode in the cell strips hydrogen nuclei(protons) from the methanol molecules.
电池中的催化电极从甲醇分子中脱去氢核（质子）。
One proton is almost as heavy as an entire atom of hydrogen.
一个质子几乎与整个氢原子的重量相等。
In proteins,atoms of nitrogen are combined with carbon, hydrogen and oxygen atoms.
在蛋自质中，氮原子与碳、氢、氧原子相化合。
Fluorescence Anion Sensing Based on Hydrogen Bonding and Proton Transfer;
阴离子荧光识别中的氢键及质子转移研究
The Study of Molecular Structures Properties, Thermodynamic Properties for Zr-H (D, T) System and Excited States of Ti-H System;
锆氢体系的分子结构与热力学性质，钛氢体系的激发态研究