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- useful seam thickness 可采层厚度
- In flat dip layer, the seam thickness control the stability of the wall rock, the thick-bedded hard rock is stable than the thin-bedded hard rock. 岩层厚度在缓倾斜时对围岩稳定起控制作用,厚层硬岩整体稳定性好于薄层状硬岩。
- Those methods were concluded.The borehole restrained frequency area quantified was applied to prepare a related program for the quantitative prediction of seam thickness. 对这些办法进行了归纳,并采用钻孔约束频域定量预测法(谱矩法)来编制相应的程序进行煤层厚度定量预测。
- The comprehensive research showed that coalbed methane accumulation is mainly controlled by coal seam thickness,coal petrological composition,coal rank,adsorbability and good preservation conditions. 综合研究表明:该区煤层气富集的控制因素主要为煤层厚度、煤岩组分、煤级、吸附性能和良好的保存条件。
- The paper introduces the sedimentary environment of coal and coal?bearing strata,the properties of coal seams and the causes resulted in the variation of seam thickness in laung mining district,Kalimantan Tengah,Indonesia. ? 介绍了印尼中加里曼丹拉翁煤矿区煤和含煤岩系的沉积环境、煤层特征以及引起煤厚变化的原因。
- Seam thickness probed with reflection total deviation method 用反射共偏移法探测煤层厚度
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- Analysis on the Coal Seam Thickness Change and Geological Formation 煤层厚度变化地质成因分析
- Analysis on the change of seam thickness in Zhujiahe coalfield 朱家河井田煤层厚度变化研究
- Will you partake of a drink with us? 和我们一同喝一杯好吗?
- He cut off a bunch of grapes to entertain us. 他剪下一串葡萄招待我们。
- It irks us to wait for people who are late. 等候迟到的人使我们厌烦。
- She made us all laugh with her zany tricks. 她那些滑稽的恶作剧逗得我们都大笑起来。
- The bandits subject us to all sort of indignity. 强盗们对我们加以各种侮辱。
- Spectral moment method to inverse coal seam thickness by seismic data 地震资料谱矩法反演煤层厚度
- Kindly send us two samples of each class quote for. 报价时,请对每一个等级的各寄两个样品。
- One of the fishing boats sank down astern of us. 有一艘渔船在我们后面沉没了。
- Keywords coal seam thickness;substep drivage;support parameter;support method; 煤层厚度;分台阶掘进;支护参数;支护方法;
- Each of the components is useful in its degree. 每一个元件都各有程度不同的用处。
- His years of study were useful in his job. 他多年的学习有助于他的工作。