GRAININESS – the sand-like or granular appearance of an image.

颗粒状– 照片出现沙子状或颗粒状的表象。

youdao

I like walking on the wet sand when the tide is out.

我喜欢退潮后走在潮湿的沙滩上。

《牛津词典》

Sediment as you know, is material like sand, gravel, fossil fragments that is transported by natural processes like wind, water flow or the movement of glaciers.

如你所知，沉积物是通过风、水流或冰川运动等自然过程输送的物质，如沙子、砾石、化石碎片等。

youdao

The company is the second largest producer of commercial silica, which is a sand-like substance used in fracking as well as glass making and chemical manufacturing.

FORBES: Frackers Drilling for IPO Dollars

For the remaining decade he and some hired engineers improved the aqua- barrier design, adding new products like protective sand-filled barrels and the first collapsible crash-cushions.

FORBES: Crash course

In the Sahara it sank to its hubs in fine, talc-like sand.

ECONOMIST: Ian Hibell