The hydrogen maser is the most stable frequency standard generally available today for all but the shortest measuring time.
氢脉泽是至今为止除极短时间测量间隔之外最稳定的频率标准，它是甚长基线干涉测量仪（ＶＬＢＩ）中的一个关键设备。
The hydrogen maser is the most stable frequency standard generally available today for all but the shortest measuring times.
氢脉泽是至今为止除极短时间测量间隔之外最稳定的频率标准 ,对于 1 0 4 s或更长的测量时间间隔 ,它的性能由于高 Q值谐振腔而引起频率漂移而变坏 。
Design improvement and performance evaluation of the atomic hydrogen maser at Shanghai Observatory in recent years;
上海天文台近年来氢脉泽的技术改进与性能评价
The atomic hydrogen maser is the most stable frequency standard generally available today for all but the shortest measuring time interval.
氢脉泽是一种中、长期稳定度最高的原子频率标准。
The infrared properties of extragalactic H_2O maser sources;
河外水脉泽源的红外特性(英文)
The producing principle of maser was discussed (Maser: Microwave amplification by stimulated emission ofradiation).
探讨了脉泽(Maser:Microwave amplification by stimulated emission of radiation)的产生机理,根据它产生区域和形成机制的不同,对脉泽进行了分类。
It is found that maser is impossible in vacuum as in the case of synchrotron radiation, while the plasma affects the radiation spectrum and self-absorption properties greatly and maser emission is possible in a plasma.
根据同步曲率辐射理论 ,论文推导了真空中和等离子体中弯曲磁场下相对论性电子辐射的自吸收系数 ,发现真空中同步曲率辐射与同步辐射一样没有负吸收放大作用 ,而等离子体对辐射谱和自吸收性质有重大影响 ,存在脉泽放大效应 。
AN EXPERIMENTAL STUDY OF THE MAGNETRON CAVITY AND THE QUADRUPOLE STATE SELECTOR AND THEIR APPLICATION IN CAMPACT HYDROGEN MASER;
磁控管腔和四极态选择器的试验研究及其在小型氢脉泽中的应用
Experimental Study on Growth and Hydrogen Production of Spirulina subsalsa
盐泽螺旋藻的生长及放氢的实验研究
Construction of Rhodopseudomonas palustris hupL gene deficient mutant with higher efficient of H_2 production
沼泽红假单胞菌高效产氢hupL缺失突变株的构建
Study on Improving the Tint of OCC Pulp with hydrogen peroxide
过氧化氢轻度漂白改善OCC纸浆色泽的研究
Hybrid Culture on Impact of Hydrogen Production and Metabolism of Rhodopseudomonas palustris
混合培养对沼泽红假单孢菌产氢及代谢的影响
On Train of Thought about the Formation of Mao Zedong's "Capitalist-Roader Group" Theory
毛泽东“走资派”理论形成脉络探析
On the Inclinations of the Host Galaxies of H_2O Masers
水脉泽寄主星系的倾角分析(英文)
A study on the relationship between the scientific development ideas and the thoughts of MAO Ze-dong, DENG Xiao-ping and JIANG Ze-min;
科学发展观同毛泽东、邓小平、江泽民发展思想一脉相承
"Metallic hydrides, such as titanium hydride (TiH2), are alloylike materials with some properties of metals, such as luster and electrical conductivity."
金属型氢化物,例如氢化钛(TiH2),是类合金材料,具有光泽、导电等金属特性。
If improved luster is the goal, the sodium hydroxide concentration is kept at a high level.
如果丝光的目的是改善光泽,氢氧化钠溶液的浓度应较高。
Construction of Rhodopseudomonas Palustris hupL-and Research on Characteristic of Hydrogen-production
沼泽红假单胞菌hupL缺失突变株构建及产氢特性研究
Determination of Trace Lead in the Water of Zhangzhe Reservoir by HG-AFS
氢化物发生原子荧光法测定漳泽水库中的铅含量
ENERGY ANALYSIS OF THE PROCESS OF PHOTO-HYDROGEN PRODUCTION BY RHODOSEUDOMONAS PALUSTRIS IN BATCH CULTURE
序批式培养沼泽红假单胞菌光照产氢的能量分析
Important Thought of Three Representation Is the Some as Maozedong s Thought;
“三个代表”重要思想与毛泽东思想一脉相承
On Forming and Developing JIANG Ze-min s Creative Thinking of Science and Technology;
江泽民科技创新思想的形成和发展脉络
Anti-atherosclerotic Effect of Jiawei Zexie Tang in Rats
加味泽泻汤抗大鼠动脉粥样硬化作用研究
Investigation on Zero Boil-off System of Liquid Hydrogen Based on Pulse Tube Cooler;
基于脉管制冷机的液氢无损贮存系统研究
Study on Pulse Tube Refrigerator and Refrigeration Performance with Helium & Hydrogen Mixture;
脉管制冷机及氦氢混合工质制冷性能研究