1.
genus of fossil seed ferns of the Carboniferous.
石炭纪的一种化石种子蕨。
2.
of or related to fossil cephalopods of the order Ammonoidea.
菊石目头足动物的化石或者与这种化石相关的。
3.
The rocks themselves bear another kind of evidence--the fossils.
岩石本身还拥有另一种证据――化石。
4.
With the development of sicial civilization, stone implement evolved a rich stone culture, such as stone pit culture, engraving culture, rock cave culture, ingenious stone culture, etc.
随着社会文明的进步,石器逐渐衍生成一种丰富的石文化,诸如采石、镌石、石窟、奇石文化等。
5.
A microscopic fossil, as of a pollen grain or unicellular organism.
微体化石一种微小的化石，如花粉粒或单细胞有机体的化石
6.
Application of Three Types of Lime Nitrification Device in the Lime-milk Preparation System
石灰乳制备系统中三种石灰硝化装置的应用
7.
Petroleum can be used to produce various chemical products.
石油可用于生产多种化学产品。
8.
a mineral (iron-nickel sulphide) that is the chief ore of nickel.
一种矿物（铁镍硫化物），是镍的主要矿石。
9.
any plant or fossil of the genus Psilophyton.
裸蕨属的一种植物或化石。
10.
one of the coiled chambered fossil shells of extinct mollusks.
一种已灭绝的头足类动物的化石脱壳。
11.
an oxide of iron that is strongly attracted by magnets.
一种氧化铁矿石，能被磁铁吸引。
12.
a shiny fossil called amber
一种名为琥珀的光彩夺目的化石
13.
The petroleum hydrocarbon is called hexane.
己烷是一种石油碳氢化合物。
14.
The rock is resistant to weathering and erosion.
这种岩石不易风化和侵蚀。
15.
the wood petrified with time.
随着时间的推移这种木头石化了。
16.
A black variety of garnet.
黑榴石一种黑色石榴石
17.
DISCOVERY AND ESTABLISHMENT FOR THE NEW GENUS AND SPECIES IN LATE PERMIAN FOSSIL OF SEED
晚二叠世种籽化石—新属种的发掘与建立
18.
Introduction and Ex-situ Conservation of Endangered Native Dendrobium Orchid
濒危石斛兰野生原种的迁地保护与引种驯化