Its natural types are roasted kaolin, burnt breccia, burnt rock and burnt mudstone.
焙烧高岭土、火烧角砾岩、火烧岩、烧变泥岩四种矿石自然类型。
The coal seam roof of Huojitu mine is the burnt rock, which is the water impregnated aquifer, is dangerous to mine safety.
烧变岩是活鸡兔矿井的顶板充水含水层，直接威胁着矿井的生产安全。
Burnt rock is come into being coal bed self-ignite and bring wall rock metamorphose and has special engineering geological characteristics.
烧变岩是煤层自燃引起周围围岩变质而形成的，具有特殊的工程地质性质。
Ash and bits of rock that were burnt black were falling onto the ship now, darker and more, the closer they went.
此时此刻，烟灰和几片被烧成黑色的石块散落在船上；他们越靠近(火山)，天色就更暗，而且散落的东西也就越多。
Ash and bits of rock that were burnt black were falling onto the ship now, darker and more, the closer they went.
灰尘与烧黑的石块落到船上。他们越靠近，周围越黑，石块落下越多。
Ash and bits of rock that were burnt black were falling onto the ship now, darker and more, the closer they went.
灰烬和片片烧黑的岩石开始往船上掉落，他们走得越近，就越黑更多。
Ash and bits of rock that were burnt black were falling onto the ship now, darker and more, the closer they went.
灰烬和片片烧黑的岩石开始往船上掉落，他们走得越近，就越黑更多。
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