"It's sort of like a feather -- it floats down, and its terminal velocity depends on the density, " he said.
“这个有几分像羽毛--它飘落下来，并且它的自由沉降速度取决于它的密度”，他说。Through the detail study of the flow pattern in the transition of the reactor, the concept of suspended bed reactor had been developed.
进而对生物颗粒沉降、悬浮床反应器膨胀率等基本特性进行了数学模型的研究，并通过实验予以验证。With oil settling into the sediment deep on the seafloor, it's difficult to see at this point exactly how they are going to pull that off.
但是随着漏油沉降到深海海底，目前来看很难知道他们将如何完成那一目标。Settlement rate method is often used to decide surcharge removal time for embankment on soft ground.
软土地基上的路基施工常采用沉降速率法确定超载卸荷时间。They sink gradually and reach the surface of the earth in the form of a deadly dust or rain.
放射性粒子会逐渐沉降，并以放射性尘埃或雨水的方式落至地表。Analysis from the variable law of displacement, the settlement difference of the four foundations is all in reasonable range.
从基础底板位移变化规律看，四种基础的沉降差都在允许的沉降范围内。First are the Descending Sons of God, those that you know as angels, but there are many types that are not angels.
第一类为上帝的【沉降之子】，如那些你们所知晓的天使们，但有许多类别并不是天使。The final settlement of low density roadbed might be twice of that of high density roadbed.
压实度不足时，路基的工后沉降量可能成倍增加。Suspended particles are large enough to settle out or to be filtered.
悬浮微粒粒径大，可以通过沉降或过滤去除。