frequency lock锁频frequencyn.频繁；频率Frequency-Biasing Technique of Laser Gyro激光陀螺的偏频技术frequency stabilization by quartz resonator石英稳频法Frequency Modulation Feedback Discriminator调频反馈鉴别器frequency measurement wigh filtering method滤波法测频frequency measurement with filtering method滤波法测频Frequency-Agile Low Coverage Netted Radar灵活频率小视野网状雷达frequency-modulated broadcast transmitter调频广播发射机frequency-hopped spread-spectrum signal跳频扩展频谱信号Frequency-synchronous detection technique频率-同步探测frequency characteristic testing instrument频率特性测试仪