查询词典 isotopes

Periodic Table Ⅶ B family silver or gray-black powder bulk solid metal transition element, atomic number Z = 35, the original of the amount of 186,207, the chemical symbol FRe, there are two natural isotopes, stable 18575Re and radioactive 18775Re.

元素周期表中ⅦB族银白色的块状或灰黑色粉末状固体金属过渡元素，原子序数Z＝35，原了量186207，化学符号FRe，天然同位素有两种，稳定的18575Re和放射性的18775Re。

The work function changes of iron and chromium was also studied in this paper for the reason of the oxide layer of 316 stainless steel consists of mainly iron and chromium oxide, the result is conducive to comprehend the mechanics of oxidation behavior and its interaction with hydrogen isotopes.

鉴于316不锈钢表面氧化层主要由铁、铬氧化物组成，本文还探讨了铁和铬金属表面的功函数变化；所得结果有助于理解不锈钢表面的氧化行为及与氢同位素的相互作用机理。

The outer layer consists of iron oxide and the inner layer chromium and iron oxide. The central point at hindering effect of the surface on the permeatin of hydrogen isotopes is the reduction of this oxide layer.

不锈钢表面对氢同位素透过的阻碍作用实质是该氧化层所发生的还原反应；其还原反应的程度主要依赖于与氢同位素作用的温度条件，并能够从功函数的变化中明显地反映出来。

Boron has two stable isotopes 10B and 11B,which have relative abundances of 19.90 % and 80.10 %,respectively.

硼具有两种稳定同位素10B和11B，其在自然界的丰度分别是19.90%和80.10%。

Looking at these isotopes allows the chondrules to be dated, and they were formed 4.56 billion years ago.

观察这些同位素可以估算出陨石球粒的年龄，他们是在45.6亿年前形成的。

Periodic Table Ⅵ B family silver-white metallic luster of the solid metal transition element, atomic number Z = 74, atomic weight of 18385, chemical symbol W, there are five kinds of natural F stable isotopes, 18174W, 18274W, 18374W, 18474W, 18574W and eight kinds of radioisotopes .

周期表中ⅥB族银白色金属光泽的固体金属过渡元素，原子序数Z＝74，原子量18385，化学符号W，有五种自然F 稳定同位素，18174W、18274W、18374W、18474W、18574W和八种放射性同位素。

The granulite xenoliths, as the product of basaltic underplating and the representative of the present-day lower crust, are different from the local Archean granulite terrains There is a systematic variation of Sr-Nd isotopes from the granulites to the pyroxenites and the peridotites, indicating the possible crust-mantle interaction beneath Hannuoba area.

麻粒岩类捕掳体所代表的年轻大陆下地壳为玄武质底垫作用的产物，与麻粒岩地体所代表的古老大陆下地壳不同。橄榄岩类捕掳体则具亏损特征，辉石岩类捕掳体的性质介于麻粒岩类和橄榄岩类捕掳体之间，但石榴子石辉石岩显示了其特殊性。

The probable application of hydrogen isotopes and metal hydrides to future energy source is reviewed.

评述了氢同位素与金属氢化物在未来能源中的应用。

Based on the data of directional core drilling, FMI, routine cores and their thinsections, we have described the characteristics of H3 reservoir in Anpeng oil field, Miyang sag. By analyzing the stable isotopes of 20 fracture infillings and 5 groups of acoustic emission, combined with the studies of fracture characteristics and tectonic evolution, the fractures in H3 member were assigned to the regional fracture type which is characterized by the dominance of vertical or highangle extensional fracture, occurring in groups, relatively stable occurrences and out of the control of local nosetype folds. It has been recognized that there are 4 breaking stages, of which the 2nd one is the major stage.

根据定向取心、成像测井、常规岩心及薄片资料对安棚油田核三段储层天然裂缝特征进行分析的基础上，通过对20个裂缝充填物的稳定同位素测定，5组样品的声发射实验，结合岩心裂缝特征、地质构造历史等，确定出核三段地层中裂缝为区域性裂缝，以垂直或高角度张性缝为主，成组出现，产状稳定，不受局部鼻状构造控制，确定出裂缝有4个破裂期，主要破裂期为第二期。

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。

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。