Limestones

常见例句

There are four principal types of limestones.
石灰岩有四种主要类型。
A small round calcareous grain found,for example,in limestones.
鲕粒岩含有圆形小颗粒的石灰质岩石，如在石灰岩中
A small round calcareous grain found, for example, in limestones.
鲕粒岩含有圆形小颗粒的石灰质岩石，如在石灰岩中
The isotopic signatures of most ancient limestones indicated the same process.
大多数古代石灰岩的同位素特征说明了同样的过程。
For more highly cemented materials and limestones, significant difference in total porosity and effective porosity values may occur.
对于含泥浆较多的物质或石灰岩，其总孔隙度和有效孔隙度会有很大差别。
Oolitic limestones are rare and interbedded in the dark-gray mudstones and/or shales.
这些砂岩和鲕粒灰岩既可单独成层，但更常见它们与深灰色泥页岩组合成薄互层。