... 预先指定的 preassigned 预约频率 reserve frequency 预约线路 reserve line ...
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备用频率 alternate frequency; alternative frequency; reserve frequency 词使用频度 utility frequency of word ..
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frequency modulation reserve 调频备用机组
frequency regulation reserve 调频备用
frequency regulation reserve release 调频容量释放
·2,447,543篇论文数据，部分数据来源于NoteExpress
The purpose of autofocusing is to remove the radial motion effect of the target from radar echoes, and only reserve the stepped frequency effect which is the basis of synthetic HRR capability.
自聚焦的目的是从雷达回波中消除目标径向运动的影响，只保留步进频率的影响，而后者是合成hrr能力的基础。
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