These are spheres of silica, silica and oxygen.

这些是二氧化硅、二氧化硅和氧气的球体。

The pineapple silica differs from silica nanospheres that are synthesized in labs for various applications.

菠萝二氧化硅不同于在实验室合成的适用于不同用途的二氧化硅纳米球。

She caught him eating small round silica beads.

她发现他在吃小圆硅珠。

And the role of the silica got forgotten entirely.

二氧化硅的作用被彻底遗忘。

The sample also contained silicon dioxide and silica glass.

品还有二氧化硅和二氧化硅玻璃。

Like quartz, opal is made of silica.

同石英一，欧泊二氧化硅组成。

They're probably formed out of a silica rich solution.

它们可能是二氧化硅的溶液形成的。

In fact the silica in sand is basically just tiny bits of quartz.

实际上沙子里的硅砂本质上就是细碎的石英。

The diatomaceous silica in the litter could have clouded Dyson's senses.

猫砂里的硅藻土可能影响了戴森的嗅觉。

Even a single polymorph of silica can take on a huge variety of forms.

即便是二氧化硅的一种多晶体都可以有大量的组成型态。

So you've got, opals are made up with these little spheres of silica.

你可以看到，蛋白石是这些小硅石球组成的。

These little spheres of silica are, you know, here, you know, very tiny.

这些小硅石球，你知道，在这里，你知道，非常小。

The nation’s largest silica sand provider — U.S. Silica — projects a 15 percent drop in demand.

美国最大的石英砂生产商美国石英砂公司预计需求将下跌15%。

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

近年来，硅土（从沙土中提取的二氧化硅）已经脱颖而出。

And silica also increases a tyre's wet grip.

并且，硅土还可以增加轮胎的湿路抓地力。

Instead, it's made of little spheres of silica all bunched together.

反而，它是小型的球状硅粒聚在一起形成的。

The obvious question then is: Was there silica available in the early earth environment?

在早期地球环境中是否存在二氧化硅?

For red light, with its long wavelengths, the silica beads must be close to 300 nanometers.

红光的波长很长，因此矽珠必须要隔开约三百奈米。

At the temperatures and pressures humans find comfortable, silica makes the alpha, or so-called “low”, form of quartz.

在人类适宜的温压条件下，二氧化硅形成α-石英，或者我们所说的低温石英。

Silica structure is based on a tetrahedral arrangement of a silica atom bonded to oxygen atoms.

它的基本结构是一个硅原子与四个氧原子成键，构成一个四面体。