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.
重水之所以重是因为水中氢的重量是普通氢的两倍（它的原子核中有一个质子和一个中子，而不仅仅是一个质子）。
Heavy water is heavy because the hydrogen in it weighs twice as much as ordinary hydrogen (it has a proton and a neutron in its nucleus, instead of just a proton).
重水因含重氢而得名。重氢是氢原子的一种，其原子核中含有一枚中子，加之正常氢元素中的质子，重量为一般氢原子的两倍。
Heavy water gets its name because it contains deuterium, a form of hydrogen that has a neutron in its nucleus as well as the usual proton and thus weighs twice as much as the ordinary sort.
氢是最轻的元素，原子核中只有一个质子，而铀这种自然形成的最重元素的原子核中有92个质子。
Hydrogen, the lightest element, has a single proton whereas uranium, the heaviest naturally occurring one, has 92.
重氢是原子核中多一个中子的氢。
A deuterium atom is a hydrogen with an extra neutron in its nucleus.
氢融合技术可能需要超过20年才能被用于是用，无中子核融合技术提供了一种替代的方式。
While practical hydrogen fusion may be twenty years away, aneutronic fusion offers an alternative.
氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2.04。
An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of 2.04.
氢的替代亲核取代反应(VNS)是与硝基芳环的亲电反应、亲核反应不同的一种新反应。
Vicarious nucleophilic substitution (VNS) of hydrogen is a new type of reaction which is different from the usual electrophilic and nucleophilic reactions of the nitro arenes.
这煽起氢燃料及原因进行不断增长的星核融合的速度在加快。
This stirs up hydrogen fuel and causes the growing star to undergo nuclear fusion at a faster rate.
PVP等在氘代氯仿中可使硝基安定1位氢的核磁信号向低磁场方向位移。PVP与硝基安定的相互作用比HCO-60等要强。
When PVP or HCO-60 was added to a deuterated chloroform solution of nitrazepam, the 1H-NMR signals of N (1 )-H shifted to lower magnetic fields.
采用红外、质谱、核磁氢谱对正辛基聚葡萄糖苷进行了表征，并对其表面张力、临界胶束浓度、乳化性能、润湿性能、泡沫性能和复配性能进行了测试。
IR spectra, mass spectrum and 1H NMR characterize it. Its surface tension, cmc, emulsification, moistening property, froth property and complex property are tested.
合成了一种新的携带有葸荧光基团和硫脲基的阴离子受体2，通过核磁氢谱、质谱和元素分析等表征了它的结构。
A novel anion receptor 2 bearing anthracene flurophore and thiourea was synthesized and identified by 1H NMR MS, IR and elemental analysis.
氘氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2。
An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of2.014.
对中间体和最终产物螺虫乙酯进行了纯化，采用质谱、核磁氢谱、红外光谱等进行了表征。
Intermediate products and Spirotetramat were purified, and their structures were characterized by MS, 1H NMR and IR.
对中间体和最终产物螺虫乙酯进行了纯化，采用质谱、核磁氢谱、红外光谱等进行了表征。
Intermediate products and Spirotetramat were purified, and their structures were characterized by MS, 1H NMR and IR.
应用推荐