硅石 (guī shí) — silica (silicon dioxide, a mineral used in glassmaking and electronics)

Definição

Exemplos

• 这种硅石的纯度很高。
  Zhè zhǒng guī shí de chún dù hěn gāo.
  This kind of silica has very high purity.
• 玻璃的主要原料是硅石。
  Bō li de zhǔ yào yuán liào shì guī shí.
  The main raw material for glass is silica.
• 工人们从矿里开采硅石。
  Gōng rén men cóng kuàng lǐ kāi cǎi guī shí.
  The workers mine silica from the quarry.