native rock meaning in English

母岩
原生岩

A lot of diagenetic dolostones have remainder granulation structure , and the native rock of it may be various intraclast limestone . this type of rock usually has high primary porosity . the high primary porosity is the important base of forming the pore of dolostone reservoir
一部分成岩白云岩仍具有残余粒屑结构，其原岩可能主要为各种类型的粒屑灰岩，这类岩石通常具有较高的初始孔隙度(原生孔隙度) ，这是以后形成成岩白云岩储层孔隙的重要基础条件。
Injun joe s bowie - knife lay close by , its blade broken in two . the great foundation - beam of the door had been chipped and hacked through , with tedious labor ; useless labor , too , it was , for the native rock formed a sill outside it , and upon that stubborn material the knife had wrought no effect ; the only damage done was to the knife itself
他死前拼命用刀砍过那门下面的大横木，凿穿了个缺口，可是这没有用，外面的石头天然地形成了一个门框，用刀砍这样坚固的门框，简直是鸡蛋碰石头，根本不起作用，相反刀倒被砍得不成形了。