陨石的

The large number of meteorites from Antarctica and the desert areas of Australia,Africa and North America changed the previous chondrite classification in recent years.

近年来在南极及澳大利亚、非洲和北美的沙漠地区发现和回收了大量的陨石，改变了以前的球粒陨石分类。

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。

At first it was thought to be a meteor impact crater due to its circularity but this has since been disproven due to the lack of shock-altered rock in its vicinity.

首先他被认为是一个陨石撞击而产生的陨石坑，因为它呈现的是一个圆的形状；但是这个说法已经被推翻，因为它的坑内附近缺乏陨石撞击会产生的变质岩石(shock-altered rock)。

At first it wasthought to be a meteor impact crater due to its circularity butthis has since been disproven due to the lack of shock-altered rockin its vicinity.

首先他被认为是一个陨石撞击而产生的陨石坑，因为它呈现的是一个圆的形状；但是这个说法已经被推翻，因为它的坑内附近缺乏陨石撞击会产生的变质岩石(shock-alteredrock)。

According to the studies of maskelynite and the mineral assemblages in the shock veins, it seems that the nowadays shock classifications of meteorites should be further modified.

根据对冲击变质主要压标熔长石性质的最新分析结果和陨石冲击脉体矿物组合研究的成果，指出现有陨石冲击变质分类的主要特点和某些不完善之处。

Petrologic types for the 23 chondrites are ascertained mainly based on the property of chon-drules and matrix structures of the chondrites, as well as the composition of olivines, structures of pyroxenes and characteristics of feldspars, and so on.

陨石岩石类型的确定，主要根据陨石中球粒及基质的特征，参考其它标志，如橄榄石成分、辉石的结构、长石的特征等进行分类，效果较好。

It is said that in March 1976 the meteorite shower happened there for 10 minutes. Innumerable aerolites including the largest one of 1770 kg fell and an enormous group of aerolites formed.

传说1976年3月这儿曾下过长达10分钟的&陨石雨&，形成了庞大的陨石群，其中最大的一块陨石重达1770公斤。

The others include 1 martian meteorite, 1 HED meteorite and 6 L3 ordinary chondrites. These 20 equilibrated ordinary chondrites are classified into chemical groups of H, L and LL, respectively, based on mean Fa content of oli-vine, mean Fs of low - Ca pyroxene and abundance of Fe-Ni metal.

根据橄榄石的平均Fa值、低Ca辉石的平均Fs值和Fe-Ni金属含量将这20块陨石分别划分为H、L和LL等化学群；根据球粒结构、基质重结晶程度和矿物成分对这些陨石进行岩石类型的划分。

Total 28 samples were collected from the section of 385.8—386.4 mcd at ODP Site 1144 (20°3.18′N , 117°25.14′E , water depth 2 037 m), northern South China Sea, and microtektite, planktonic foraminifera and stable isotope analyses were performed in order to evaluate the effect of the mid-Pleistocene impact on microplanktonic communities and environment.

本文对采自南海北部 ODP114 4站(2 0°3.18′N，117°2 5 。14′E，水深 2 0 37m) 385 。8— 386 。4 m层段的 2 8个沉积物样品进行了微玻陨石、浮游有孔虫及其同位素分析，以评估中更新世撞击事件对环境的影响。微玻陨石见于孔深 386 。12— 386 。38m，而集中分布在 386 。2 2— 386 。2 5 m厚约 3cm的地层中。

He merle gene is very common, and very popular, in the Australian Shepherd breed (they are sometimes called "those little blue dogs");,it is relatively common among Collies and Shelties as well.

产生双merle的唯一途径就是二只陨石繁殖。其结果，统计学上四分之一的宝宝为正常色，二分之一为携带单merle的陨石，另四分之一就是双merle基因的宝宝。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。