球粒

Applying the method to the study on the origin of Tunguska explosion and making the following conclusions:(1) these excess elements were likely resulted from the Tunguska Cosmic Body explosion of 1908.(2) The Tunguska explosive body was composed of materials similar to Cl chondrite, and, most probably, a cometary object, which weighed more than 10〓 tons and had a radius of more than 126m.

将通古斯地区沉积物样品中PGE和其他微量元素的结果应用于通古斯爆炸的成因研究中，得出了如下结论：(1)Pd、Os、REE、Sr、Co和Ni等元素的异常是由于通古斯爆炸事件导致地外物质的增加所引起的；(2)通古斯爆炸物体可能与碳质球粒陨石成分类似，很可能是慧星，其质量大于10〓吨，半经大于126米。

The ordinary chondrite Semarkona is the most unequilibrium LL3.0 type meteorite, which might be only weakly effected by later thermal metamorphism. Thus, the age of Semarkona is significantly important for the studying of the formation and evaluation of meteorite.

普通球粒陨石Semarkona是最小平衡的LL3.0型陨石，受后期热变质的影响很小，因此其年龄研究对反演陨石起源有重要意义。

An ordinary chondrite(Sample No.GRV052483) was recovered on blue ice during the 22nd Chinese Antarctic Research Exploration in Grove Mountains,Antarctica.

南极陨石GRV052483样品为中国第22次南极科学考察队在蓝冰上发现的一块普通球粒陨石。

In spite of its low model abundances of the Ningqiang refractory inclusions, high model abundances of olivine aggregates, and high matrix/chondrule volumetric ratio relative to Allende and CV chondrite, the Ningqiang meteorite is a typical oxidizing CV chondrite.

宁强陨石的岩石学、岩石化学特征与CV陨石相应特征相似，尽管宁强陨石具有相对于Allende和CV陨石的较高的富Ca，Al包体、较低的杆拦石集合体的模式丰度和较高的基质/球粒的体积比，宁强陨石仍是一块典型的氧化型CV陨石。

Well-documented Lu-Hf isotope data from the oceanic basalts show that,the starting area of magma melting for the MORBs derived from the DMM component would be in the the depth of garnet peridotite,i.e.at the depth of 80―90 km instead of less than 60 km,which is at the depth of spinel peridotite as proposed early.The HIMU component,which is characterized by its high rediogenic lead,is refered as a special mantle component differentiated at some time in geological history from the lower mantle.A correlation study of Hf-Nd isotope between the chondrite and oceanic basalts implies that no isolated primitive mantle might have remained.

大量的大洋玄武岩Lu-Hf同位素研究表明：具亏损地幔端元来源的洋中脊玄武岩岩浆部分熔融的初熔区位于石榴石稳定场深度，即深度为80-90 km的石榴石二辉橄榄岩地幔，而不是原来所认为的尖晶石二辉橄榄岩区(深度小于60 km)；以高放射成因Pb为特征的高U地幔端元应代表了下地幔物质在某一特定时期发生分异作用的结果；球粒陨石与大洋玄武岩Hf同位素对比研究表明，没有原始地幔物质能保留至今的迹象。

The elemental weight ratios (Na, K, Mg, Ca, Fe, Al, Ti, Mn, Ni)/Si of Ningqiang matrix are within the range of the corresponding ratios of CV chondrite matrix, Ca/Si and Al/Si ratios are high relative to those in the other CV chondrite matrix.

宁强基质的元素重量比值（Na、K、Mg、Ca、Fe、Al、Ti、Mn、Ni）/Si处于CV球粒陨石相应比值的变化范围之内，而Ca/Si、Al/Si值相对于其它CV陨石基质的同样比值较高。

In each chondrule the contents of element Fe and Au in edge part are more than those in inner part of the chondrules respectively.

单个球粒中Fe、Au在其边部比在其内部更为富集。

In this paper, different leaching procedures were used for the chondrules and chondrule fragments of Semarkona, and the U-Th-Pb compositions of leachates and residues were analyzed by TIMS method. The residues normally give higher 206Pb/204Pb ratio, suggesting higher radiogenic Pb compositions. These residues form a Pb-Pb isochron, and give an age of (4566.9±5.8) Ma with MSWD of 26, consistent to the weighted average age of 207Pb/206Pb model ages.

在本文中，对Semarkona中球粒用不同的化学浸洗流程，并测定浸洗溶液和残渣中U-Th-Pb同位素组成，其中浸洗后的残渣均给出相对较高的206Pb/204Pb比值，表明其中含有较多的放射成因Pb同位素组成，这此残渣构成Pb-Pb等时线，给出年龄为(4566.9±5.8)Ma，MSWD=26，与207Pb/206Pb模式年龄在误差范围内一致。

The configuration of the pore space is different from that which would be obtained from the packing of uniform spheres.

自然界物质孔隙结构与均匀球粒的堆积而形成的孔隙是不同的。

When content of COPEI resin is above 30 wt%, utter phase dispersions occur, furthermore with increasing of contents of C...

当COPEI树脂含量在30％以上时，共混体系出现完全反转相结构，随着其含量增加，环氧树脂分散相尺寸逐渐减小，制得的环氧树脂微球粒径和粒度分布逐渐降低。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐