These limestones have been quarried for centuries .
这些石灰岩已经开采百年了。
There are four principal types of limestones .
石灰石有四种主要类型。
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。
Diagentic comparisons between non-tropical cenozoic limestones of new zealand and tropical mississippian limestones from indiana , usa : is the non-tropical model better than the tropical model ?
