游泳帽有：单色泳帽、内颗粒泳帽、花色泳帽、无缝圆头帽等，可以印刷客人提供的图案。
Swimming cap are: monochrome swimming cap, swimming cap particle, suit swimming cap, round cap and so seamless, you can print designs provided by customers.
通过实验研究了圆棒在颗粒物质中受到的摩擦力与颗粒填充高度及棒径的关系。
The dependence of the static friction force on a rod immersed in granular matter on the filling height of granules and the diameter of the rod is studied experimentally.
南宁盆地圆砾颗粒组成均匀，胶结紧密，分布连续，是较理想的桩端持力层。
In Nanning basin, the circular-gravel layer is an ideal bearing stratum of piles, because of it's homogeneous particle composition, compact cohesion and continuous distribution.
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