Based on researches on mineralogy of the Upper Precambrian System of Anhui Province, the cherts from the Sidingshan Formation of the Huainan Group of Anhui Province were selected to determine Rb-Sr and Sm-Nd isotopes.
在对苏皖北部的上前寒武系进行了矿物学研究基础上 ,选择安徽北部淮南群四顶山组燧石作为测定对象 ,系统测试 Rb- Sr和 Sm - Nd同位素 ,应用 Sm- Nd等时线方法进行了定年。
Containing or composed of flint.
燧石的含燧石的或由燧石构成的
The piece of flint used to strike the igniting spark in a flintlock.
引火燧石用来在燧发枪中击打出引火火花的燧石
It is defeat that turns bone to flint;
是挫折使骨头坚如燧石；
This layer of rock contains a lot of flint.
这一岩层中有大量燧石.
The Indians chipped flint arrowhead.
印第安人凿制燧石箭头。
A piece of flint used to produce a spark.
打火石，电石一种用来产生火星的燧石
A crude stone artifact, such as a flint.
始石器原始的石制品，如燧石
A variety of silica that contains microcrystalline quartz.
燧石含微小晶状的石英的各种硅石
because this is easier to shape than other kinds.
因为燧石较之其他石头更易成形。
The Neolithic Flint Mines at Spiennes (Mons)
蒙斯的斯皮耶纳新石器时代燧石矿
filter tube, of crushed and agglolmerated quartz or flint
过滤器管,碾碎和凝集石英或燧石制
resembling or containing chert.
类似于或含有燧石质、 石英质。
a gunlock that has flint embedded in the hammer; the flint makes a spark that ignites the charge.
在锤子中含有燧石的扳机；燧石发出火花点燃装料。
He had carried a copper ax and a dagger of flint from near Lake Garda, about150 kilometers to the south.
他带著一柄铜斧，一把燧石小刀，燧石来自南方150公里处的加尔达湖。
An obsolete gunlock in which a flint embedded in the hammer produces a spark that ignites the charge.
燧发枪，明火枪一种由嵌入的燧石产生火星来点燃炸药的老式扳机
An early flint tool with a head like a chisel.
錾刀一种尖端象凿子的古代燧石工具
They tipped their arrows with flint.
他们将箭的尖端装上燧石。
At that time they have learn to strike fire from flint
那时他们已学会了用燧石打火