例如，我们使用的每年误差不超过1分钟的石英水晶钟表和手表。

For example, we have Quartz crystal clocks and watches accurate to within one minute a year.

youdao

阿肯色州和巴西集合了地球上两个最大的石英水晶体和相关的宝石形式，是这项号召的关键。

Arkansas and Brazil are composites of the two greatest masses of quartz crystal and associated gemological forms on the planet, and are key to this call.

youdao

同时一些硬度相同或更高的物质，例如钻石、刚玉、氧化金属、石英水晶都有可能损坏这些材料。

At the same time, some of the same or higher hardness material, such as diamond, corundum, metal oxide, quartz crystals are likely to damage the material.

youdao