于描述一个晶体频率特性的参数主要有频率容限（Frequency Tolerance）、频率温度特性（Frequency Temperature Characteristics）和频率电压特性(Frequency Voltage Characteristics)，它们描述晶体振荡频率随外界因素影响而发生的变化，用ppm和ppm/V表示。
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Studies the resonator frequency temperature characteristic, then designs the middle-frequency tracking band pass filter.
研究了谐振子频率的温度特性并设计了频率跟踪带通滤波器。
Tantalum chip capacitors standard, miniature size, wide operating temperature, high stability, good frequency characteristic.
片式钽标准品，小体积、宽温、高稳定、频率特性好。
Under the room temperature and Nitrogen environment (eliminate the influence of water vapor absorption), we get the characteristic absorption spectrum of GaAs within the band of frequency.
在室温去除水份影响的氮气环境中，获得了低温生长的砷化镓在该波段的特征吸收谱。
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