对于同一类土，饱和土体阻尼作用大于非饱和土体。
And damp in saturated soil was larger than that in unsaturated one.
纳米塑料中用作纳米无机相材料的蒙脱土（MMT），是我国丰产的一类天然粘土矿物。
MMT which is used as nanometre inorganic phase in nanometre plastic is a kind of rich natural clay mineral in our country.
水、土中硫酸盐对混凝土结晶腐蚀，经工程实践和实验研究证明是受宏观气候影响最大的一类腐蚀。
It is proved by practice and tests that crystallizable erosion of concrete by sulfates in water and soil is one of the most serious ones influenced by macroclimate.
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