水晶,很早就被人们视为珍宝.1880年,居里兄弟俩发现了“压电现象”,继之卡迪发明了振荡器以来,致使水晶的用途日益扩大.水晶是非常稳定的结晶体,具有极优良的频率稳定性,作为优质的弹性体.利用晶体制作的稳定振荡器,已用于无线电电台、汽车电话、私人无线电等通信机和广 Crystal, very early people are regarded as treasure .In 1880, Curie brothers found the “piezoelectric phenomenon”, followed by Cady invented the oscillator, resulting in the growing use of the crystal.Crystal is a very stable crystal, Has excellent frequency stability, as a high quality elastomer. The use of crystals made of a stable oscillator, has been used for radio stations, car phones, private radios and other communication devices and wide