陨石

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 abundances of siderophile element Fe, Co, Ni, Au are close to those in Allende and CV chondrite, Na is slightly enriched and Mn,Cu show depletion.

亲铁元素Fe、Co、Ni、Au的丰度与Allende和CV陨石相应丰度接近，而Na略有富集，Mn、Cu显示出贫化的特征。

The results suggest that natural TL of the three samples with known depth positions had depth distribution such as meteoritic cosmogenic nuclides, which was smaller with increasing distance from the current surface, indicating the conditions of cosmic ray exposure of the Jilin chondrite.

对3个已知取样深度和3个未知取样部位的吉林陨石样品的热释光研究表明，其自然热释光值具有宇宙成因核素含量相似的性质即深度分布效应，随着样品距离表面位置的增大而降低，这表征了母体暴露期间宇宙射线的分布状况。

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。

Small granule (of e.g. chrysolite) found in some meteoric rocks.

一些陨石中发现的细小微粒。

The Centre will continue in the pioneering traditions of astrobiology on panspermia, interstellar and cometary dust, meteorites from Mars, the connection between comets and terrestrial life, and comet-Earth interactions so on.

中心将继续在太空生物学方面的研究，包括胚种学，星际和彗星尘埃，火星陨石，彗星和陆地生物间的联系，彗星与地球间的关系等。

A convincing counterargument came from paleontologists Philip Signor of the University of California at Davis and Jere Lipps, now at Berkeley.

美国加州大学戴维斯分校的席格诺与现于柏克莱分校的李普斯，提出过一个可信的论证来反驳陨石说。

When the reporter stopped feeling countless mini-meteorites falling on his head and, instead, saw many pairs of legs flocking around his desk, he quickly yanked off a cuff button and clambered out from underneath the desk. He held up the button to show his colleagues. They were not convinced, but didn't want to pry into his privacy, so they all dispersed.

当好奇记者不再感觉有无数的『无形的小陨石』落在头上时，也看到了很多双男男女女的脚围绕在桌子旁边，好奇记者立刻扯下袖扣拿在手心从办公桌下爬出来，向同事展示手中的袖扣，同事们虽有疑惑但也不方便多问甚麼，大夥儿一哄而散。

The origin of this meteorite is probably compatible with a partial melting cumulation model.

陨石的形成机制与多阶段部分熔融－堆积模式较为一致。

Diopside is an important rock forming mineral in several metamorphic and basic to ultra basic igneous rocks, also found in meteorites.

透辉岩是形成矿物的一种重要的岩石，主要存在于变质岩与火成岩的基类与超基类中，也可在陨石中发现。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。