Subsurface structures have been obtained through regional deep seismic profiles and kinematic data recovered from nearly continuously cores 通过区域深反射剖面和近于连续的岩心样品数据，已经获得了地下的精细结构剖面。
The discovery of traces of early oxygen was made in a study of a 3 , 000 - foot - long rock core extracted in western australia 这一发现- - -对于氧气起源的时间可能更早- - - -是在对澳大利亚西部采得的3000英尺长的岩石岩心进行研究时产生的。
During sample preparation for palaeomagnetic reorientation , the proplem of magnetic pollution which is produced by other magnetic field should be cautions . 4 在古地磁定岩心方向时，要谨防岩心再次受到外界环境和操作过程中的磁污染。
It shields the vessel against eruptions of methane gas and pressurized fluids and allows for the secure retrieval of nine - meter - long core samples 这个装置不但可预防船只受到甲烷气体与高压液体喷发的伤害，也使得每次加深九公尺探采的岩心样本可安全的回收。
This paper presents the experiment of compressibility , porosity and permeability by using artificial cores on which different confining pressures are put 研究过程中采用实际人造岩心，从实验角度经过反复升降围压实验对岩石压缩系数、孔隙度及渗透率进行了测试。
Drill cores of miocene rocks in brazil , which provided the only complete sequence of the change from reddish clays to the blue and brown sediments , further corroborated my conclusions 巴西的中新世岩石钻探岩心，提供了淡红色黏土连续转变成蓝棕色沉积物的证据，更加支持了我的结论。
