Spontaneous imbibition behavior of brine,nonionic surfactant solution,anionic surfactant solution,and cationic surfactant solution and its effects on recovery efficiency were studied in water-wet Chinese outcrop sandstones.
利用国产露头砂岩岩心,研究水湿条件下盐水、非离子表面活性剂、阴离子表面活性剂和阳离子表面活性剂溶液的自发渗吸规律及其对采收率的影响,对比盐水渗吸、表面活性剂溶液渗吸和先盐水渗吸后表面活性剂溶液的渗吸情况。
The effect of inorganic salt on spontaneous imbibition and recovery factor of surfactant flooding has been studied under water-wet condition with outcrop sandstone cores.
利用国产露头砂岩岩心,研究了亲水条件下,无机盐对岩心采用表面活性剂溶液进行自发渗吸驱油的规律和采收率的影响。
Rock outcrops form almost continuous low cliffs.
岩石露头形成几乎连绵不绝的低矮峭壁。
Practically every rock outcrop shows numberless joints.
实际上所有岩石的露头都显示许许多多的节理。
The rocks are disintegrated by frost and rain.
风霜雨露使岩石分化。
During our first three expeditions, we never gave a second thought to the gravels that overlay the Triassic rock outcrops in the southwestern part of the island.
在我们头三个田野季节里，岛上西南部三叠纪岩层露头处上面覆盖的碎石，我们从不留意。
The ship struck the rocks head on.
那艘船迎头撞上了岩石。
diagonal cut rock drill plus bits
对角十字形岩石钻头
rock-bit interaction model
岩石-钻头互作用模式
rock-bit interaction
岩石与钻头互相作用
Consisting of or relating to stone or rock.
石的含有或关于石头或岩石的
The soil was washed away by the flood, exposed bare rock.
泥土被洪水冲走，露出光秃秃的岩石。
The soil was washed away by the flood, exposing bare rock.
泥土被洪水冲走, 露出光秃秃的岩石.
There are lots of rocks cropping out(up) in the field
那块田里有许多岩石露出地面。
rugged limestone rocky land
石灰岩犬牙交错状裸露地段
To protrude above the soil, as rock formations.
露出地表（如岩石形成物）伸出地表
The tone depends on the type of exposed rock.
色调取决于出露岩石的类型。
The Comparative Analysis of Diagenesis of Outcrop Sandstones and Core Sandstones in Chengzihe Formation、Muling Formation, Jixi Basin
鸡西盆地城子河组、穆棱组露头砂岩与岩芯砂岩成岩作用比较分析
At a surface exposure the host rock dips steeply to the east.
在一个露头处，含矿主岩向东陡倾。
For example, near Beijing the wall is constructed from quarried limestone blocks.
例如，北京附近的城墙是用露天石灰石岩块。