The sample also contained silicon dioxide and silica glass.

还含有二氧化硅和二氧化硅玻璃。

More recently, silica (silicon dioxide, which comes from sand) has come to the forefront.

近年来，硅土（从沙土二氧化硅）已经脱颖而出。

The primary component of the most common form of sand is silicon dioxide.

沙子最基本式基础成分是二氧化硅。

The fragment of silicon dioxide in the sample recorded the pressure and subsequent heat and depressurization of a lunar impact event.

二氧化硅碎片记录了月球撞击事件压力以及随后热量和减压。

Trickling down through gaps in soil and rock, water flows through sandstone, limestone, and basalt, picking up a microscopic compound called silicon dioxide.

水从土壤和岩石缝隙滴下来，流过沙岩、石灰岩，以及玄武岩，因而携带二氧化矽这种微小化合物。

It's made from the stuff of microchips: silicon, a layer of silicon dioxide, and on top a very thin film of silicon nitride, which is perforated by a grid of microscopic circular holes.

硅、二氧化硅层以及最上层非常薄氮化硅薄膜，而这层薄膜被打上排成网格状微小圆孔。