It is difficult to detect the absolute density of rock by ct image in quantitative analysis of rock damage process in compression.
用CT图像定量分析岩石受力损伤破坏过程的难点，是难以知道岩石内部的绝对密度变化量。
Using mercury to separate gold from rock, millions of small-scale miners worldwide inhale toxic vapors during the refining process, exposing themselves to neurological and genetic damage.
由于用水银从矿石中分离金，全世界数百万小规模采矿者在精炼过程中吸入水银蒸汽，使他们的神经和遗传受到损害。
The blasting damage and fracture process of rock is complicated dynamic evolvement process.
岩石爆破损伤断裂过程是一个复杂的动态演化过程。
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