friction properties were studied while sandstone and mudstone fracture plane contacted with its interbed both in the natural state and on the condition of mud blended.
研究了自然状态和接触面掺泥两种情况下的砂巖、泥巖破裂面及其互层接触的摩擦特性。
professor dunn believes we should convince our bodies they are still in the natural state of our ancestors: roaming bug-infested forests and living in unsanitary hovels.
邓恩博士认为,我们仍然应该让自己的身体处于天然状态,正如我们的祖先一样,他们在虫子遍地的森林里漫步,在卫生状况不佳的棚舍里生活。
by using l_9(34) orthogonal experimental design method, the cementation reaction of three kinds of solid wastes in the natural state were investigated.
运用l_9(34)正交试验设计方法,研究了3种固体废弃物在自然状态下的胶结反应。