Precambrian

US 
UK 
  • adj.【地】前寒武纪的
  • n.前寒武纪
  • Web元古宙；前寒武层；前寒武纪地层

E-C

E-E

Web Definition

adj.
1.
【地】前寒武纪的
n.
1.
前寒武纪

Sample Sentence

Definition:
AllAll,前寒武纪的前寒武纪的,前寒武纪前寒武纪,元古宙元古宙,前寒武层前寒武层,前寒武纪地层前寒武纪地层
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
1.
"Plumes" from deep mantle do not operate in the modern Earth and did not operate in Precambrian time.
来自地幔深处的“热柱”，在现代地球上并无发生，其实，自寒武纪之后就不再发生。
lái zì dì màn shēn chù de " rè zhù " , zài xiàn dài dì qiú shàng bìng wú fā shēng , qí shí , zì hán wǔ jì zhī hòu jiù bú zài fā shēng 。
www.023java.com
2.
Chemical fossils (e. g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age.
化学化石（烷烃和卟啉）是前寒武纪地层中生命存在的唯一证据。
huà xué huà shí ( wán tīng hé bǔ lín ) shì qián hán wǔ jì dì céng zhōng shēng mìng cún zài de wéi yī zhèng jù 。
plb.snnu.edu.cn
3.
The first three eons, which together lasted nearly 4 billion years, are together known as the Precambrian.
前三个时期合起来持续了40亿年，合称为前寒武纪（隐生宙）。
qián sān gè shí qī hé qǐ lái chí xù le sì shí yì nián , hé chēng wèi qián hán wǔ jì ( yǐn shēng zhòu ) 。
article.yeeyan.org
4.
Initial Sr isotope ratios show that the ore materials of the deposit were derived from the host rocks or Precambrian basement.
锶同位素初始比值测试结果表明大梁子铅锌矿床成矿物质来源可能主要源自围岩碳酸盐岩或基底地层。
sī tóng wèi sù chū shǐ bǐ zhí cè shì jié guǒ biǎo míng dà liáng zǐ qiān xīn kuàng chuáng chéng kuàng wù zhì lái yuán kě néng zhǔ yào yuán zì wéi yán tàn suān yán yán huò jī dǐ dì céng 。
www.geojournals.cn
5.
with the geological evolution in precambrian , minerogenetic materials and types of mineral deposits obviously varied and increased.
随著中国前寒武纪地史的演化，成矿物质种类和矿床类型具有明显的变化和增多。
suí zhù zhōng guó qián hán wǔ jì de shǐ de yǎn huà , chéng kuàng wù zhì zhǒng lèi hé kuàng chuáng lèi xíng jù yǒu míng xiǎn de biàn huà hé zēng duō 。
www.ichacha.net
6.
There are abundant mineral resources in the Precambrian rock formations, on which the survival and development of mankind depend.
在前寒武纪岩层中蕴藏着丰富的矿藏，为人类的生存和发展提供了大量的有用资源。
zài qián hán wǔ jì yán céng zhōng yùn cáng zhe fēng fù de kuàng cáng , wèi rén lèi de shēng cún hé fā zhǎn tí gōng le dà liàng de yǒu yòng zī yuán 。
www.geojournals.cn
7.
That history began with the origin of the primitive, unicellular aquatic algae of the Precambrian Eon.
最初，前寒武纪出现原始的单细胞水生藻类，除了蓝绿藻和细菌之外。
zuì chū , qián hán wǔ jì chū xiàn yuán shǐ de dān xì bāo shuǐ shēng zǎo lèi , chú le lán lǜ zǎo hé xì jūn zhī wài 。
chinafanyi.com
8.
Precambrian BIF iron ore deposit can be divided into two types, Algoma-type and Lake Superior-type.
前寒武纪条带状含铁建造铁矿床分为阿尔戈马型和苏必利尔湖型两大类。
qián hán wǔ jì tiáo dài zhuàng hán tiě jiàn zào tiě kuàng chuáng fēn wéi ā ěr gē mǎ xíng hé sū bì lì ěr hú xíng liǎng dà lèi 。
oldweb.cqvip.com
9.
These findings are not of Precambrian animals themselves, but of their tracks. And these, paradoxically, may be more useful.
发现的并不是寒武纪前的动物本身，而是它们的足迹。而出人意料的是，这些足迹可能还更有用。
fā xiàn de bìng bú shì hán wǔ jì qián de dòng wù běn shēn , ér shì tā men de zú jì 。 ér chū rén yì liào de shì , zhè xiē zú jì kě néng hái gèng yǒu yòng 。
www.kekenet.com
10.
The argument that the Nyalam Group represents the whole Precambrian strata in the Himalaya area is worth discussing.
因此，认为“聂拉木群”代表喜马拉雅地区全部“前寒武系”是值得商榷的。
yīn cǐ , rèn wéi " niè lā mù qún " dài biǎo xǐ mǎ lā yǎ dì qū quán bù " qián hán wǔ xì " shì zhí de shāng què de 。
www.ceps.com.tw