岩石

Secondly, study on bleaching of sandstone based on field characteristics, petrography, geochemistry and compared with other sandstone related, combined with geological setting of gas seepage in the area, reveals that natural gas leakage is responsible for bleaching of the sandstone on top of Yanan formation. The bleaching resulted from interaction between the reductive fluid and the rock. At the same time the bleaching suggests that the northeast of basin has experienced large scale gas seepage.

在此基础上，通过漂白砂岩野外露头地质特征、岩石学、地球化学以及相关砂岩的对比研究，结合研究区天然气逸散的地质背景，揭示砂岩漂白现象为上古生界天然气逸散过程中，还原性流体与岩石作用的结果，同时也表明其指示了天然气的大规模逸散作用。

With the geometry model and kinematics model of roller cone rock bit, the interaction model of rock bit and rock is established which was based on the experiment of interaction between single tooth and rock. It is a good fundament for the computer simulation on working action of rock bit drilling.

在牙轮钻头几何学、运动学基础上，利用单齿压入与刮切岩石实验建立了钻头与岩石互作用力学模型，实现了对钻头在钻井过程中工作行为的仿真计算； 2。

The SiO2 content of the dike swarms varies from 50.22% to 61.10% and they are basic-intermediate rock series, mainly basic. The Al2O3 content is generally higher than 15% and they are high aluminum basaltic rocks. The lower magnesium index (Mg#=42.77~62.28) and TiO2 content (0.97~2.41%) illuminate that they suffered magnesium-iron minerals' fractional crystallization and that they did not crystallize from original basaltic magma. The values of Na2O/K2O are all above 1, indicating lower K character. Chemically discriminated, these dike swarms are sub-alkaline rock series.

岩墙群的SiO2含量为50.22~61.10%，属于基性和中基性岩类，以基性为主；它们的A12O3含量普遍高于15%，属高铝玄武岩类；具有较低的镁指数（Mg#=42.77~62.28）及TiO2含量（0.97~2.41%），说明它们经历了镁铁质矿物的结晶分异作用，也指示它们不是由原始玄武岩浆结晶；Na2O/K2O都大于1，显示出低钾的特点；岩石化学判别，岩墙群岩石属亚碱性系列。

The shape of cuttings is related with the drilling parameters. The cuttings often appear in irregular flakes during air hammer drilling, and in spindle shape during cone bit drilling.

岩屑的形状与钻井参数有关，空气锤破碎岩石的岩屑形状呈不规则片状，牙轮钻头破碎岩石的岩屑形状呈纺锤形。

"Druse:a crust of tiny crystals lining a rock cavity, usually composed of the same minerals that occur in the rock."

&晶簇：嵌于岩石洞穴的小晶簇，一般由与岩石相同的矿物成分组成。&

"Druse:a crust of tiny crystals lining a rock cavity, usually composed of the same minerals that occur in the rock."

&晶簇：嵌于岩石洞穴的小晶簇，一般由与岩石相同的矿物成分组成。&属于上流社会。

Anticlines are folds that arch upward, with older rocks in the center and younger rocks on the outside.

背斜是褶皱的向上的拱门，和更老的岩石在中心和较年轻的岩石在外侧。

Anticlines are folds that arch upward, with older rocks in the center and younger rocks on the outside.

背斜褶皱认为是向上拱，与古老的岩石在中心和年轻的岩石在外面。

Other rocks are breccias — crushed and broken rock fragments, fused by the heat from impact collisions and ejected from the resulting crater.

其他岩石是角砾岩——由粉碎和破碎的岩石碎片，经挤压的高温融化并在火山口喷发出来。

Early in pre-production Geonosis was known simply as the "rock planet," a rugged world of red soil and stone, reminiscent of Mars and the desolate buttes and mesas of the American southwest.

制作初期的吉诺西斯只简单地被形容为一个&岩石星球&，有著红色的土壤及岩石，令人联想到火星，荒芜的山丘以及美国西南部的台地地形。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！