purple rock  紫色岩

purple shale  紫色岩

purple shale area  湖南

purple shale region  紫色页岩地区

burgess shale shale  页岩; 泥板岩; 热重分析

Chang 7 oil-shale rock  长7段油页岩

impregnated shale rock  浸染页岩

lined layer shale rock  锚索拉拔力

Shale Rock  页岩

oil shale and oil shale residue  油页岩及其灰渣

assemblage of source-rock reserve and cap-rock  生储盖组合

flexible rock and special flexible rock  软岩和极软岩

from thick rock salt to thin rock salt  从厚岩盐到薄岩盐

hard rock interbedded with soft rock  软硬相间岩层

metamorphic rock of the original rock  变质岩原岩

rock and rock mass  岩石与岩体

rock bench for rock-bolt crane beam  岩锚梁岩台

Rock Content in Coal Rock Mixture  煤矸混合度

rock damage rock breaking  岩石损伤