A number of samples of plank form mineral composite materials have been made from these mineral materials and white cement in different proportions.

利用这些矿物材料和白水泥按照不同的配比制成多种板状矿物复合材料样品。

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The palm-sized seal is made of red and white steatite, a type of mineral rock.

这个巴掌大的东西由粉红色的玉石（一种矿物岩石）制成。

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The physical attributes of an in-service valve with Dezincification includes a white powdery substance or mineral stains on its exterior surface.

使用中的阀门出现失锌想象时的物理特征包括：在外表面出现白色粉末或矿物污点。

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As red earth gave way to gray and what looked like a shoreline, veins of a powdery white mineral appeared in the ground.

NEWYORKER: The Martian Chroniclers

Out there in the desolate, lunar like desert of northern Chile is a mineral-rich ore called caliche -- once known as white gold.

FORBES: Patricio Contesse's white gold