当颗粒级配不同时，结构性原状粉砂土样和不具有结构性的配制土的强度均不同。
When the grain size distributions are not the same, not only the undisturbed samples with structure but also the reconstituted samples with non-structure are not similar in strength.
江苏滩涂为粉砂质沉积物组成，有机质含量低，结构性差，抗蚀能力弱。
Seashore is composed of silty sediment in Jiangsu province, content of organic matter is low, soil structure is bad, and the capacity of resistance to erosion is weak.
赋存稳定，结构简单，煤种为FM、JM，煤层顶板为石灰岩、粉砂岩，底板为泥质粉砂岩、砂质泥岩；
The occurrence is steady and the structure is simple with FM, JM types of coal, whose roof is limestone and siltstone and bottom is muddy siltstone and sandy mudstone;
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