Methods A silver wafer with a basis resonance frequency 10 Mhz AT cut quartz crystal is used as the piezoelectric component; and the oscillation frequency shift of the quartz crystal during the blood coagulation is monitored. 方法采用AT切向、基频10MHz的银膜石英晶体作为压电元件;
Parasitism and spurious suppression in AT cut 49U/ S crystal resonators AT切49U/S石英谐振器寄生与寄生抑制
Measurement results have shown that the SC cut crystal has an advantage over AT cut. 测试结果证明,SC切晶体谐振器确实比AT切的具有更多的优点。
The QCM consisted of two AT cut quartz crystals, of which one was working crystal, another one was used as a reference to account for the effects of pressure and gas viscosity on the crystals. 试验中,QCM由测定和参考两个AT切向的石英晶片组成,其中作为参考的石英晶片用来反映压力增加和气体粘度对石英晶片的影响。