Only in the tropics were numerous late Cretaceous groups extinguished during peaks in their evolution.
只是熱帶地區(qū)才有大批晚白堊紀(jì)生物類群正值其演化的極盛時(shí)期突然消亡.
辭典例句
The Cretaceous extinction was like a terrible streak of bad luck lasting millions of years.
白堊紀(jì)的生物絕滅,猶如一場(chǎng)持續(xù)千百萬(wàn)年的可怕厄運(yùn).
辭典例句
The story takes place 6500 years ago in the Cretaceous period.
故事發(fā)生在6500萬(wàn)年前的白堊紀(jì)晚期.
互聯(lián)網(wǎng)
So the researchers resorted to some techniques out of a Cretaceous CSI.
所以科學(xué)家只能借助于《犯罪現(xiàn)場(chǎng)調(diào)查:白堊紀(jì)篇》用到的技術(shù).
互聯(lián)網(wǎng)
NEW EARLY CRETACEOUS LALACID FROM JINGXI BASIN OF BEIJING, CHINA ( HOMOPTERA: FULGOROIDEA )
北京京西盆地早白堊世同翅目化石一新屬 ( 同翅目: 蠟蟬總科)(英文 )
互聯(lián)網(wǎng)
From the view of stratigraphy, they all belong to the Cretaceous period.
從地層學(xué)上看, 它們都屬于白堊紀(jì).
互聯(lián)網(wǎng)
Upper Cretaceous : Including the Sifangtai Formation — Minshui Formation, corresponding to the Cenonian — Maestrichtian.
四方臺(tái)組—明水組為白堊系上統(tǒng), 相當(dāng)于賽諾—梅斯特利克蒂階(Senonian—Maestrichtian).
互聯(lián)網(wǎng)
An image feet of live mainly in Jurassic and cretaceous.
蜥腳形類主要生活在侏羅紀(jì)和白堊紀(jì).
互聯(lián)網(wǎng)
Mineral, palaeontology, middle devonian, permian to early jurassic, and cretaceous.
收藏礦物 、 古生物學(xué) 、 中泥盆紀(jì) 、 二疊紀(jì)到早期的侏羅紀(jì)和白惡紀(jì).
互聯(lián)網(wǎng)
Xihu depression is a cretaceous - tertiary basin undergoing multi - episodic tectonism.
西湖凹陷是經(jīng)歷多期構(gòu)造作用的白堊 - 第三紀(jì)盆地.
互聯(lián)網(wǎng)
Chagan Depression is a rift subsidence basin, which has developed cretaceous hydrocarbon.
查干凹陷為一白堊紀(jì)斷陷湖盆, 發(fā)育白堊紀(jì)含油氣系統(tǒng).
互聯(lián)網(wǎng)
Cretaceous sandstone and Eogene mudstone are the main reservoir and caprock.
油氣從油氣田東部注入,由東向西運(yùn)移并差異聚集,依次形成凝析氣藏、帶油環(huán)凝析氣藏和揮發(fā)性油藏.
互聯(lián)網(wǎng)
The facies types of the Lower Cretaceous are mainly delta, lake and turbidity.
下白堊統(tǒng)的扎賚諾爾群的沉積相的主要類型為三角洲相, 湖相和濁流相.
互聯(lián)網(wǎng)
The prototype of Zhoukou Cretaceous basin should be of foredeep basin.
白堊紀(jì)周口盆地的盆地原型應(yīng)是山前凹陷盆地.
互聯(lián)網(wǎng)
A NEW EARLY CRETACEOUS FAMILY FROM LIUPANSHAN , NINGXIA, CHINA ( INSECTA, TRICHOPTERA )
寧夏六盤山早白堊世一新科 ( 昆蟲綱, 毛翅目 )
互聯(lián)網(wǎng)
"cretaceous rocks"