Quartzcrystals are manufactured for frequencies from a few tens of kilohertz to hundreds of megahertz.
加工成型的石英晶体的频率可从几十千赫兹到数百兆赫兹。
2
Quartzcrystals are also found inside test and measurement equipment, such as counters, signal generators, and oscilloscopes.
在测试测量设备中也有它们的身影，例如计数器、信号发生器及示波器。
3
At the same time, some of the same or higher hardness material, such as diamond, corundum, metal oxide, quartzcrystals are likely to damage the material.