crystal: n.1.结晶，(结)晶体；晶粒；水晶(＝rock crystal)；石英。2.【无线电】晶体。3.结晶玻璃；雕玻璃；〔美国〕水晶玻璃。4.〔诗〕水晶一样的东西〔冰、水、泪、眼睛等〕。5.〔俚语〕神秘的征兆；预言，占卜。6.〔美俚〕厕所。短语和例子eyes as clear as crystals 一双眼睛明如秋水。 a necklace of crystals 水晶珠项链。
Methods for the measurement of frequency and equivalent resistance of unwanted resonances of filter crystal units 滤波器晶体单元的无用谐振频率和等效电阻的测量方法
2.
Quartz crystal units ; methods for the measurement of frequency and equivalent resistance of unwanted resonances of filter crystal units 压电石英器件.测量方法.滤波器晶体附加谐振的频率和
