查询词典 mA

Precambrian time is now divided into three eons: Hadean, from the earth ' s origin to about 3900 Ma; Archaean, 3900-2390Ma; and Proterozoic, 2390-570 Ma (the Cambrian marks the start of the Phanerozoic eon, which extends to the present day).

现在将前寒武纪分为三个时代；冥古代，从地球诞生到约39亿年前；太古代，39亿年前—23.9亿年前，以及原生代，23.9亿年前—5.7亿年前（寒武纪标志显生代的开始，延续至今）。

Jack Ma put it more bluntly:''We don't want to annoy the government.'' Ma is the hyperkinetic C.E.O. of Alibaba, a Chinese e-commerce firm.

阿里巴巴网站的老板Jack Ma说的更直接&我们不想让政府生气。&

As a result, when in , subset of MA, obtained by imposing constraints on MA, AL is intensional because =L is equivalent with ≡.

在考虑了复制操作和限制操作的情况下，提出了逻辑等价的协归纳操作描述，并利用协归纳关系与进程结构同余关系进行比较，证明了若对MA加上约束条件得到子集MAsynIF，此时逻辑等价与结构同余关系是等价的，即AL在MAsynIF中是内涵的。

The source of 100-110Ma and 90±Ma mafic dikes is similar to that of 125±Ma mafic dikes, and the source of 100-110Ma mafic dikes include more depleted mantle content.

这两期的基性岩脉的源区可能由亏损地幔、EMⅠ和EMⅡ地幔组分组成，与（125±Ma）基性岩脉类似，但早白垩世未期（100～110Ma）基性岩脉的源区可能含有相对较高的亏损地幔组分。

Major element abundances of the silicate phase of the two mesosiderites are similar to those of howardites. The cosmic ray exposure ages are (242± 50) Ma for Dong Ujimqin Qi mesosiderite and (25.4± 5.0) Ma for Weiyuan mesosiderite.

东乌珠穆沁旗及渭源中铁陨石的硅酸盐相在主元素丰度上类似于紫苏钙长无球粒陨石，其宇宙射线暴露年龄分别为(252±50)Ma和(25.9±5.0)Ma。

Three major metallogenetic epoch s in the evolution are late Archean (2 700￣2 600 Ma) greenstone, late Palezoic (450￣340 Ma) epigenetic and Mesozoic mesothermal—Cenozoic epithermal types gold mineralization epoch, respectively.

本区银矿成矿时代为195～100Ma；成矿物质以深部来源为主，兼有基底和盖层物质加入；成矿热液主要是岩浆水中混入大量天水的混合水

The first large-scale metallogeny took place from 180 Ma to 170 Ma, represented by Cu, Pb-Zn,mineralization in northeastern Jiangxi and southe...

第三次是发生在燕山晚期12 5～98Ma的以南岭地区Sn、U矿化和东南沿海地带的Au_Cu_Pb_Zn_Ag矿化为代表的成矿作用。

Never had he been at such an altitude of living, and he kept himself in the background, listening, observing, and pleasuring, replying in reticent monosyllables, saying,"Yes, miss," and "No, miss," to her, and "Yes, ma'am," and "No, ma'am," to her mother.

他从不曾过过这样高雅的生活。

A number of microplants with spherical, triangular, polyangular and boat-like shapes have been found both from the early Palaeoproterozoic Dashiling and Qingshicun Formations (ca. 2500- 2400 Ma) of the Doucun Subgroup of the Hutuo Group and the late Palaeoproterozoic Changzhougou and Chuanlinggou Formations (ca. 1800 -1700 Ma) of the Changcheng Group in North China. According to the features of these fossils, such as size, external shape and internal structure, they may belong to unicellular eucaryotic planktons.

在华北地区古元古代滹沱群豆村亚群的大石岭组、青石村组(约2500～2400 Ma)和长城群的常州沟组、串岭沟组(1800～1700 Ma)中存在着大直径的球形和形态呈三角形、多角形及船形微古植物，根据它们的大小、外部形态和内部结构等综合判别，它们可能属于单细胞真核浮游生物。

Ma Ma Ergou Pombo decorative large dog, like his brother Er Gou and his brother have an unlimited imagination for the future, has been acting as her brothers assistant, is very respected brother.

马二狗 庞勃饰马大狗弟弟二狗和大哥一样对未来抱有无限幻想，一直充当哥哥的助手，非常敬重大哥。

The two-acre Dunbar Community Garden in Little Rock has served as a model for several years.

几年来，坐落于小石城，占地两英亩的邓巴社区菜园树立了一个标杆。

Jerry points to the jacket hanging in the bathroom. It's ruined, and unwearable What?

杰瑞指着洗手间里挂着的夹克，毁了，不能穿了）什么？