来自德语Quarz,石头结晶体，石英。

1. The prospectors have discovered such minerals as calcite, quartz and asbestos here.

探矿人员在这里发现了方解石 、 石英、石棉等矿藏.

2. There is a great deal quartz in those mountains.

那些山里蕴藏着大量石英.

3. To this class of substance belong mica, porcelain, quartz, glass, wood, etc.

属于这类物质的有云母 、 瓷器 、 石英 、 玻璃 、 木材等等.

4. The quartz watch keeps good time.

石英表走时准.

5. Quartz timepieces are very accurate, to a minute or two per year.

石英钟表走时非常准，年误差仅为一两分钟。