磨圆度

由于黄河水的长距离搬运作用，颗粒磨圆度高、表面强度低；孔隙率高，毛细作用剧烈。

It has high psephicity , low surface strengths , high porosity and intensive capillarity because of the long transport function of the water .

泥质灰岩颗粒的磨圆度较高，颗粒表面相对光滑，但可见线状擦痕等刻蚀形态。

Argillaceous limestone particles have relative higher psephicity and smoother surfaces but a lot of linear scratches can be observed on the particle surfaces .

颗粒磨圆度为次圆一次尖，分选中等。

The particle degree of roundness is subrounded first hypocone .

岩石粒度偏细，主要为细砂岩，磨圆度为次棱角状，分选性中等&好。

The grain of the sandstone was fine , sub-angular , but sorting medium-good .

砂岩的成分成熟度较高，结构成熟度中等，分选中等-好，磨圆度好。

Sandstone compositional maturity is high and medium textural maturity . Sorting and roundness is good .

砾岩主要砾石成分为燧石，磨圆度较好，普遍含金刚石。

Chert with good abrasion is the major content in conglomerate , and diamonds are contained in it generally .

灰仓与水力贮灰场灰的不均匀系数和颗粒磨圆度有区别；

The difference of coefficients of uniformity and roundness of particles between the fly ash in silo and in lagoon is discussed ;

实验发现，由于砂岩的孔隙率大，矿物颗粒的分选度和磨圆度较好，颗粒间孔隙的连通性很好，其渗透率最高；

Experiments led to the conclusions : · that sandstone has high permeability because it has high porosity , good gradation and fine psephicity of grains , and perfect connectivity between inner pores .

成分成熟度偏低，结构成熟度中等偏低，分选好，磨圆度呈次棱角状；胶结类型以孔隙式胶结为主。

The compositional maturity was on low side and structural maturity was middle or slightly low ; well-sorted ; the psephicity was commonly assumed hypo-edge angle , cementation type was mainly pore cementation .

储层孔隙度随岩石颗粒分选、磨圆等结构成熟度的增高而增大，随长石等易溶成分的增加而增大；

The more material the structure of rock structural grain sorting and roundness , the bigger the reservoir porosity , and with the increase of the fusible ingredient such as feldspar , the porosity become bigger ;