单词	视准点
释义	视准点sighted point
随便看	frequency converter--frequency changer frequency converters frequency converter tube frequency converter，fc frequency convertor frequency coordination frequency coordinator frequency correction frequency corrector frequency correlation frequency count frequency counter frequency count heuristic frequency curve frequency curve fitting frequency cutoff frequency data frequency decay frequency deceleration frequency decorrelation frequency demodulation frequency demultiplier frequency demultiplier; frequency divider frequency density frequency departure