质子

Based on the 10060 Λ hyperons candidates events selected by us in 27. 6GeV longitudinal polarized e〓 deep inelastic scattering on unpolarized fixed proton target at HERMES, the spin transfer from fragmented u-quark to Λ hyperons, S〓, is measured.

本论文利用HERMES实验装置上的27.6GeV纵向极化正电子束与固定不极化质子靶的深度非弹散射的实验原始数据，重建了10060个Λ超子候选事例，对该过程中核子内被撞击的u夸克在碎裂过程中转移到Λ超子的自旋S〓进行了分析。

Flow field of proton exchange membrane fuel cell is an important factor which influents cell performance.

质子交换膜燃料电池流场是影响其电池性能的重要因素。

It was also found that thecross-linking degree, the micro structure and the surface morphology of the IPN membranes was more important to proton selectivity than the amount of ionomer.

同时发现，相对于离子聚合物中离子交换位的多少，膜的交联程度、微观结构及表面形貌对质子交换膜的性能影响更大。

At present the problems of lowering the prices of perfluorosulfonated ionomer membranes used in proton exchange membrane fuel cells and simplifying the operating systems of PEMFC are deeply concerned.

目前降低质子交换膜燃料电池中所用的全氟磺酸膜的成本和简化电池操作系统一直是人们关注的问题。

An assumed Gaussian tail is addedonto the HO distribution. The calculations for〓 of the protron-rich isotones 〓〓 and 〓 and for 〓 the neutron-rich isotopes 〓were finished by theGlauber Model along with the modified density distrution. The calculated resultsshow that d values of these nuclei along with the modified density distribution arelower than the calculated ones along with the only HO density distribution.

为减小Glauber模型计算的反应截面与实验值的差别，本论文还对Glauber模型的输入密度形式进行了修改，在原单-HO分布基础上加一个高斯分布的尾巴，并对丰质子的同中子素核〓及〓与〓靶以及〓和丰中子的C同位素核〓与〓靶的反应截面重新进行了计算，结果显示在中能区的计算值比原来单一密度分布的计算结构有明显改善。

Comparing with one-dimensional non-uniform longitudinal flow model, the rapidity distribution of lighter strange particle kaon also shows a dip due to the effect of transverse flow.

这里应特别强调的是：本文所说的火球是指由相对论重离子碰撞所产生的热系统，k介子，质子和Λ它们的e不同，反映了它们在纵向分布的非均匀程度不同。

Powerful superconducting magnets, cooled by liquid helium to within 1.9 kelvins (3.4 degrees Fahrenheit) of absolute zero (–459.67 degrees Fahrenheit, or –273.15 degrees Celsius), keep the protons on course and accelerate them to higher speeds.

用绝对零度（华氏-459.67度，或摄氏-273.15度）之上1.9K（华氏3.4度）的液氦冷却的强大超导磁体，用于确保质子的运行并且将之加速到更高的速度。

The membrane electrode assembly and the bipolar plate were the key components of proton exchange membrane fuel cell .

膜电极和双极板是质子交换膜燃料电池的关键组件。

Overall, this dissertation makes the following initiatives: The beam chopper remains one of the key and difficult points in all of the proposed intense beam proton linacs in the world.

综上所述，本论文体现了如下创新之处：用于强流质子直线加速器的束流切割器，在国际上同类加速器的设计中，目前仍是一个重点和难点。

The synthesis of a novel pseudorotaxane formed by cucurbit[6]uril (CB[6]) as the macrocycle and two diprotonated diaminobutane moieties as the "string" was reported.

通过葫芦[6]脲(CB[6])与两个质子化的1，4-丁二胺在水溶液中于室温下进行超分子自组装，得到一种新型的准轮烷。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。