1.
1. 石英：crystal) 石英(quartz)类无色透明,具良好结晶形状者称为水晶. 远在石器时代,便用来作装饰的饰物. 在古罗马时代,曾用水晶磨成的凸透镜来聚热点火. 现在人造水晶可用於工业上,做留声机、精确
2. 水晶：但是,作为它的替代物,是将水晶(Quartz)振子装入自激多谐振荡器,得到的振荡信号作为时基. 水晶振子相当于钟表的摆锤,是得到精确同期振动的一个手段. 振荡的频率(相当于钟摆的振动速度)非常高,例如32768Hz. 将此输入到T型触发器,
1. 石英
Quartz is a mineral in the form of a hard, shiny crystal. It is used in making electronic equipment and very accurate watches and clocks.
e.g. ...a quartz crystal.
石英晶体
noun
1. a hard glossy mineral consisting of silicon dioxide in crystal form
present in most rocks (especially sandstone and granite)
yellow sand is quartz with iron oxide impurities
2. colorless glass made of almost pure silica