cretaceous

cretaceous什么意思,cretaceous翻译

基本解释

adj.: 白垩纪的
n.: 【地】白垩纪[系]
网络: 白垩的；白垩系；白垩记

权威解释

• 白垩纪的:

  of the period between around 146 to 65 million years ago, when dinosaurs lived (until they died out); of the rocks formed during this time

英汉解释

• 【地质学;地理学】白垩纪[系]

• 石灰质的

• 白垩(质)的

• 白垩系的

例句

• Fifty-seven feet long and up to nine tons, Spinosaurus started poking his head around the early Cretaceous some 100 million years ago.

  五十七英尺长、重达九吨的棘龙在早期白垩纪，大约1亿年前便行走于这个星球之上。

• And when you wonder how much longer the film can go on without showing dinosaurs, T-Rex finally relents and goes back to the Cretaceous.

  当你在怀疑到底还有多久才能看到恐龙的时候，霸王龙突然出现并带你回到了白垩纪时代。

• Scientists believe that during the Cretaceous period, a spate of volcanic activity caused plant life to bloom on the surface of the oceans.

  科学家认为，在白垩纪，一连串的火山活动导致植物在海平面生长旺盛。

• During the Upper Cretaceous much of the area was covered by these sediments, they were, however, eroded to a considerable degree.

  晚白垩世期间，大片区域都是被这些沉积物所覆盖，但是它们很大程度上都被侵蚀了。

• By making synthetic seismic record of well data, a fine horizon calibration for the strata of Cretaceous and Jurassic are made.

  利用井资料制作合成地震记录，对白垩系、侏罗系各组地层进行了精细标定；

• Modern geology studies have shown that Hill is a world with a sense of typical Cretaceous rhyolitic ancient volcano - caldera.

  现代地质学研究表明，雁荡山是一座具有世界意义的典型的白垩纪流纹质古火山——破火山。

• A member of the Dromaeosauridae of dinosaurs, it was a bird-like theropod dinosaur, which flourished during the Cretaceous Period.

  它属于驰龙科一员，是一种类似鸟类的兽脚亚目食肉恐龙，在白垩纪繁盛一时。

• fish thought to have been extinct since the Cretaceous Period but found in 1938 off the coast of Africa.

  被认为是白垩纪时期现以灭绝的鱼，直到1938年在远离非洲海岸发现。

• Such grains have been reported in several end Cretaceous impact sites around the world as well.

  这种颗粒在其他好几个白垩纪末期遗址也发现过。

• The stippled area shows the distribution of a clean, permeable sandstone in the lower part of the lower cretaceous Muddy Formation.

  图上画点部分为下白垩纪马迪组下部洁净，渗透的砂岩分布区域。