silica
白炭黑,硅石,硅胶,硅树脂
Definitions
- 1
- : the dioxide form of silicon, SiO2, occurring especially as quartz sand, flint, and agate: used usually in the form of its prepared white powder chiefly in the manufacture of glass, water glass, ceramics, and abrasives.
Examples
The team encoded different images into DNA and encapsulated each file in a small silica particle labeled with single-stranded DNA “barcodes” corresponding to its contents.
Then remove them, brush off any remaining sticky gel, and save the leftover silica for another day.
It’s a mere speck of matter — a piece of silica crystal no bigger than a virus, levitated in a light beam.
It’s also made from a different compound, with a lower silica content, and uses a tread pattern with larger voids and fewer sipes.
Although they, too, lost sulfur to the surrounding solution, they kept their silica crust.
Silica is an invariable constituent of the ash, but in most plants occurs but in small quantity.
Quartz consists of pure silica, and when in large masses is one of the most indestructible rocks.
Silica and the alkalies occur generally, though not invariably, in all three.
In general, sand consists of finely broken crystals of silica or quartz.
Many natural waters present us with silica in a dissolved state, although it is not soluble in pure water.